s/nonzero/non-zero/

man1/intro.1

@@ -37,11 +37,11 @@ This value can be tested (e.g., in most shells the variable
 contains the status of the last executed command)
 to see whether the command completed successfully.
 A zero exit status is conventionally used to indicate success,
-and a nonzero status means that the command was unsuccessful.
+and a non-zero status means that the command was unsuccessful.
 (Details of the exit status can be found in
 .BR wait (2).)
-A nonzero exit status can be in the range 1 to 255, and some commands
-use different nonzero status values to indicate the reason why the
+A non-zero exit status can be in the range 1 to 255, and some commands
+use different non-zero status values to indicate the reason why the
 command failed.
 .SH NOTES
 Linux is a flavor of Unix, and as a first approximation

man1/time.1

@@ -59,7 +59,7 @@ was invoked, the exit status is that of
 Otherwise it is 127 if
 .I command
 could not be found, 126 if it could be found but could not be invoked,
-and some other nonzero value (1-125) if something else went wrong.
+and some other non-zero value (1-125) if something else went wrong.
 .SH ENVIRONMENT
 The variables
 .BR LANG ,

man2/adjtimex.2

@@ -134,7 +134,7 @@ is the system timer interrupt frequency.
 .TP
 .B EPERM
 .I buf.mode
-is nonzero and the caller does not have sufficient privilege.
+is non-zero and the caller does not have sufficient privilege.
 Under Linux the
 .B CAP_SYS_TIME
 capability is required.

man2/capget.2

@@ -81,7 +81,7 @@ The calls operate on the capabilities of the thread specified by the
 .I pid
 field of
 .I hdrp
-when that is nonzero, or on the capabilities of the calling thread if
+when that is non-zero, or on the capabilities of the calling thread if
 .I pid
 is 0.
 If
@@ -137,7 +137,7 @@ capability is required.
 occur if a thread without this capability tried to change its
 own capabilities by specifying the
 .I pid
-field as a nonzero value (i.e., the value returned by
+field as a non-zero value (i.e., the value returned by
 .BR getpid (2))
 instead of 0.)
 .TP

man2/eventfd.2

@@ -46,7 +46,7 @@ eventfd object.
 The following operations can be performed on the file descriptor:
 .TP
 .BR read (2)
-If the eventfd counter has a nonzero value, then a
+If the eventfd counter has a non-zero value, then a
 .BR read (2)
 returns 8 bytes containing that value,
 and the counter's value is reset to zero.
@@ -55,7 +55,7 @@ i.e., the native byte order for integers on the host machine.)
 .IP
 If the counter is zero at the time of the
 .BR read (2),
-then the call either blocks until the counter becomes nonzero,
+then the call either blocks until the counter becomes non-zero,
 or fails with the error
 .B EAGAIN
 if the file descriptor has been made non-blocking
@@ -180,7 +180,7 @@ is set to indicate the error.
 .SH ERRORS
 .TP EINVAL
 .I flags
-is nonzero.
+is non-zero.
 .\" Eventually glibc may support some flags
 .TP
 .B EMFILE

man2/fcntl.2

@@ -469,7 +469,7 @@ would report the socket as having an "exceptional condition".)
 .\" refers to a terminal device, then SIGIO
 .\" signals are sent to the foreground process group of the terminal.
 
-If a nonzero value is given to
+If a non-zero value is given to
 .B F_SETSIG
 in a multi-threaded process running with a threading library
 that supports thread groups (e.g., NPTL),
@@ -543,7 +543,7 @@ is the signal to send instead, and in this case additional info
 is available to the signal handler if installed with
 .BR SA_SIGINFO .
 
-Additionally, passing a nonzero value to
+Additionally, passing a non-zero value to
 .B F_SETSIG
 changes the signal recipient from a whole process to a specific thread
 within a process.
@@ -553,7 +553,7 @@ for more details.
 
 By using
 .B F_SETSIG
-with a nonzero value, and setting
+with a non-zero value, and setting
 .B SA_SIGINFO
 for the
 signal handler (see

man2/getitimer.2

@@ -84,7 +84,7 @@ sets the indicated timer to the value in
 .IR value .
 If
 .I ovalue
-is nonzero, the old value of the timer is stored there.
+is non-zero, the old value of the timer is stored there.
 .LP
 Timers decrement from
 .I it_value

man2/getrlimit.2

@@ -137,7 +137,7 @@ Maximum size of
 .I core
 file.
 When 0 no core dump files are created.
-When nonzero, larger dumps are truncated to this size.
+When non-zero, larger dumps are truncated to this size.
 .TP
 .B RLIMIT_CPU
 CPU time limit in seconds.

man2/getsockopt.2

@@ -122,7 +122,7 @@ parameter for
 .IR optval .
 For
 .BR setsockopt (),
-the parameter should be nonzero to enable a boolean option, or zero if the
+the parameter should be non-zero to enable a boolean option, or zero if the
 option is to be disabled.
 .PP
 For a description of the available socket options see

man2/gettimeofday.2

@@ -178,7 +178,7 @@ argument, the
 .I tv
 argument is NULL and the
 .I tz_minuteswest
-field is nonzero.
+field is non-zero.
 In such a case it is assumed that the CMOS clock
 is on local time, and that it has to be incremented by this amount
 to get UTC system time.

man2/intro.2

@@ -51,7 +51,7 @@ absolute value into the
 variable, and returns \-1 as the return value of the wrapper.
 
 The value returned by a successful system call depends on the call.
-Many system calls return 0 on success, but some can return nonzero
+Many system calls return 0 on success, but some can return non-zero
 values from a successful call.
 The details are described in the individual manual pages.
 

man2/ioctl_list.2

@@ -733,13 +733,13 @@ takes a
 .IR "struct floppy raw_cmd *" .
 If
 .I flags & FD_RAW_WRITE
-is nonzero, then
+is non-zero, then
 .I data
 points to an input buffer of length
 .IR length .
 If
 .I flags & FD_RAW_READ
-is nonzero, then
+is non-zero, then
 .I data
 points to an output buffer of length
 .IR length .

man2/ioperm.2

@@ -48,7 +48,7 @@ ioperm \- set port input/output permissions
 sets the port access permission bits for the calling process for
 \fInum\fP bytes starting from port address \fIfrom\fP to the value
 \fIturn_on\fP.
-If \fIturn_on\fP is nonzero, the calling process must be privileged
+If \fIturn_on\fP is non-zero, the calling process must be privileged
 .RB ( CAP_SYS_RAWIO ).
 
 .\" FIXME is the following ("Only the first 0x3ff I/O ports can be

man2/mlock.2

@@ -123,7 +123,7 @@ address space of the process.
 .SH ERRORS
 .TP
 .B ENOMEM
-(Linux 2.6.9 and later) the caller had a nonzero
+(Linux 2.6.9 and later) the caller had a non-zero
 .B RLIMIT_MEMLOCK
 soft resource limit, but tried to lock more memory than the limit
 permitted.
@@ -306,7 +306,7 @@ Since kernel 2.6.9, if a privileged process calls
 and later drops privileges (loses the
 .B CAP_IPC_LOCK
 capability by, for example,
-setting its effective UID to a nonzero value),
+setting its effective UID to a non-zero value),
 then subsequent memory allocations (e.g.,
 .BR mmap (2),
 .BR brk (2))

man2/pivot_root.2

@@ -71,7 +71,7 @@ They must be directories.
 \fInew_root\fP and \fIput_old\fP must not be on the same file system as
 the current root.
 .IP \- 3
-\fIput_old\fP must be underneath \fInew_root\fP, that is, adding a nonzero
+\fIput_old\fP must be underneath \fInew_root\fP, that is, adding a non-zero
 number of \fI/..\fP to the string pointed to by \fIput_old\fP must yield
 the same directory as \fInew_root\fP.
 .IP \- 3

man2/poll.2

@@ -238,7 +238,7 @@ is specified as NULL, then
 can block indefinitely.
 .SH "RETURN VALUE"
 On success, a positive number is returned; this is
-the number of structures which have nonzero
+the number of structures which have non-zero
 .I revents
 fields (in other words, those descriptors with events or errors reported).
 A value of 0 indicates that the call timed out and no file

man2/prctl.2

@@ -96,7 +96,7 @@ Return (as the function result) the current state of the calling
 process's dumpable flag.
 .\" Since Linux 2.6.13, the dumpable flag can have the value 2,
 .\" but in 2.6.13 PR_GET_DUMPABLE simply returns 1 if the dumpable
-.\" flags has a nonzero value.  This was fixed in 2.6.14.
+.\" flags has a non-zero value.  This was fixed in 2.6.14.
 .TP
 .B PR_SET_KEEPCAPS
 (Since Linux 2.2.18)
@@ -104,7 +104,7 @@ Set the state of the process's "keep capabilities" flag,
 which determines whether the process's effective and permitted
 capability sets are cleared when a change is made to the process's user IDs
 such that the process's real UID, effective UID, and saved set-user-ID
-all become nonzero when at least one of them previously had the value 0.
+all become non-zero when at least one of them previously had the value 0.
 (By default, these credential sets are cleared).
 .I arg2
 must be either 0 (capabilities are cleared) or 1 (capabilities are kept).

man2/ptrace.2

@@ -301,7 +301,7 @@ for
 .TP
 .B PTRACE_CONT
 Restarts the stopped child process.
-If \fIdata\fP is nonzero and not
+If \fIdata\fP is non-zero and not
 .BR SIGSTOP ,
 it is interpreted as a signal to be delivered to the child;
 otherwise, no signal is delivered.

man2/sched_setscheduler.2

@@ -244,7 +244,7 @@ policies).
 .SS Privileges and resource limits
 In Linux kernels before 2.6.12, only privileged
 .RB ( CAP_SYS_NICE )
-processes can set a nonzero static priority.
+processes can set a non-zero static priority.
 The only change that an unprivileged process can make is to set the
 .B SCHED_OTHER
 policy, and this can only be done if the effective user ID of the caller of
@@ -262,7 +262,7 @@ priority for the
 and
 .B SCHED_FIFO
 policies.
-If an unprivileged process has a nonzero
+If an unprivileged process has a non-zero
 .B RLIMIT_RTPRIO
 soft limit, then it can change its scheduling policy and priority,
 subject to the restriction that the priority cannot be set to a

man2/select_tut.2

@@ -119,7 +119,7 @@ descriptor is still present in the set with the
 .BR FD_ISSET ()
 macro.
 .BR FD_ISSET ()
-returns nonzero if the descriptor is present and zero if
+returns non-zero if the descriptor is present and zero if
 it is not.
 .BR FD_CLR ()
 removes a file descriptor from the set.

man2/semget.2

@@ -273,7 +273,7 @@ or a
 .B SETALL
 operation on the semaphore set.
 (Where multiple peers do not know who will be the first to
-initialize the set, checking for a nonzero
+initialize the set, checking for a non-zero
 .I sem_otime
 in the associated data structure retrieved by a
 .BR semctl (2)

man2/sigaltstack.2

@@ -134,7 +134,7 @@ outside of the process's address space.
 .TP
 .B EINVAL
 \fIss\fP is not NULL and the \fIss_flags\fP field contains
-a nonzero value other than
+a non-zero value other than
 .BR SS_DISABLE .
 .TP
 .B ENOMEM

man2/signalfd.2

@@ -260,7 +260,7 @@ file descriptor is not a valid file descriptor.
 is not a valid signalfd file descriptor;
 or,
 .I flags
-is nonzero.
+is non-zero.
 .\" Eventually glibc may support some flags
 .\" or, the
 .\" .I sizemask

man2/sysctl.2

@@ -86,9 +86,9 @@ was not found.
 No search permission for one of the encountered "directories",
 or no read permission where
 .I oldval
-was nonzero, or no write permission where
+was non-zero, or no write permission where
 .I newval
-was nonzero.
+was non-zero.
 .SH "CONFORMING TO"
 This call is Linux-specific, and should not be used in programs
 intended to be portable.

man2/timerfd_create.2

@@ -115,14 +115,14 @@ specifies the initial expiration of the timer,
 in seconds and nanoseconds.
 Setting either field of
 .I new_value.it_value
-to a nonzero value arms the timer.
+to a non-zero value arms the timer.
 Setting both fields of
 .I new_value.it_value
 to zero disarms the timer.
 
 Setting one or both fields of
 .I new_value.it_interval
-to nonzero values specifies the period, in seconds and nanoseconds,
+to non-zero values specifies the period, in seconds and nanoseconds,
 for repeated timer expirations after the initial expiration.
 If both fields of
 .I new_value.it_interval

man2/wait.2

@@ -346,7 +346,7 @@ is unspecified.
 To distinguish this case from that where a child was in a
 waitable state, zero out the
 .I si_pid
-field before the call and check for a nonzero value in this field
+field before the call and check for a non-zero value in this field
 after the call returns.
 .SH "RETURN VALUE"
 .BR wait ():

man3/argz_add.3

@@ -56,7 +56,7 @@ These functions are glibc-specific.
 An argz vector is a pointer to a character buffer together with a length.
 The intended interpretation of the character buffer is an array
 of strings, where the strings are separated by null bytes ('\\0').
-If the length is nonzero, the last byte of the buffer must be a null byte.
+If the length is non-zero, the last byte of the buffer must be a null byte.
 .LP
 These functions are for handling argz vectors.
 The pair (NULL,0) is an argz vector, and, conversely,

man3/assert_perror.3

@@ -48,7 +48,7 @@ by calling
 .BR abort (3)
 if
 .I errnum
-is nonzero.
+is non-zero.
 The message contains the filename, function name and
 line number of the macro call, and the output of
 .IR strerror(errnum) .

man3/atexit.3

@@ -64,7 +64,7 @@ all registrations are removed.
 The
 .BR atexit ()
 function returns the value 0 if successful; otherwise
-it returns a nonzero value.
+it returns a non-zero value.
 .SH "CONFORMING TO"
 SVr4, 4.3BSD, C89, C99, POSIX.1-2001.
 .SH NOTES

man3/backtrace.3

@@ -141,7 +141,7 @@ Note the following:
 Omission of the frame pointers (as
 implied by any of
 .BR gcc (1)'s
-nonzero optimization levels) may cause these assumptions to be
+non-zero optimization levels) may cause these assumptions to be
 violated.
 .IP *
 Inlined functions do not have stack frames.

man3/bcmp.3

@@ -50,12 +50,12 @@ If they are equal, and in particular if
 is zero,
 .BR bcmp ()
 returns 0.
-Otherwise it returns a nonzero result.
+Otherwise it returns a non-zero result.
 .SH "RETURN VALUE"
 The
 .BR bcmp ()
 function returns 0 if the byte sequences are equal,
-otherwise a nonzero result is returned.
+otherwise a non-zero result is returned.
 .SH "CONFORMING TO"
 4.3BSD.
 This function is deprecated (marked as LEGACY in POSIX.1-2001): use

man3/clearenv.3

@@ -48,10 +48,10 @@ to NULL.
 .SH "RETURN VALUE"
 The
 .BR clearenv ()
-function returns zero on success, and a nonzero
+function returns zero on success, and a non-zero
 value on failure.
 .\" Most versions of Unix return -1 on error, or do not even have errors.
-.\" Glibc info and the Watcom C library document "a nonzero value".
+.\" Glibc info and the Watcom C library document "a non-zero value".
 .SH VERSIONS
 Not in libc4, libc5.
 In glibc since glibc 2.0.

man3/ctime.3

@@ -192,7 +192,7 @@ The function acts as if it called
 and sets the external variables \fItzname\fP with
 information about the current time zone, \fItimezone\fP with the difference
 between Coordinated Universal Time (UTC) and local standard time in
-seconds, and \fIdaylight\fP to a nonzero value if daylight savings
+seconds, and \fIdaylight\fP to a non-zero value if daylight savings
 time rules apply during some part of the year.
 The return value points to a statically allocated struct which might be
 overwritten by subsequent calls to any of the date and time functions.

man3/daemon.3

@@ -54,13 +54,13 @@ controlling terminal and run in the background as system daemons.
 .PP
 Unless the argument
 .I nochdir
-is nonzero,
+is non-zero,
 .BR daemon ()
 changes the current working directory to the root ("/").
 .PP
 Unless the argument
 .I noclose
-is nonzero,
+is non-zero,
 .BR daemon ()
 will redirect standard input, standard output and standard error
 to \fI/dev/null\fP.

man3/dl_iterate_phdr.3

@@ -49,7 +49,7 @@ application's shared objects and calls the function
 once for each object,
 until either all shared objects have been processed or
 .I callback
-returns a nonzero value.
+returns a non-zero value.
 
 Each call to
 .I callback

man3/dlopen.3

@@ -283,7 +283,7 @@ symbols in it, then the dynamic library is unloaded.
 .LP
 The function
 .BR dlclose ()
-returns 0 on success, and nonzero on error.
+returns 0 on success, and non-zero on error.
 .SS "The obsolete symbols _init() and _fini()"
 The linker recognizes special symbols
 .B _init
@@ -357,7 +357,7 @@ typedef struct {
 .in
 .sp
 .BR dladdr ()
-returns 0 on error, and nonzero on success.
+returns 0 on error, and non-zero on success.
 .PP
 The function
 .BR dlvsym ()

man3/ecvt.3

@@ -55,7 +55,7 @@ string of \fIndigits\fP digits (where \fIndigits\fP is reduced to a
 system-specific limit determined by the precision of a
 .IR double ),
 and returns a pointer to the string.
-The high-order digit is nonzero, unless
+The high-order digit is non-zero, unless
 .I number
 is zero.
 The low order digit is rounded.
@@ -65,7 +65,7 @@ is stored in \fI*decpt\fP.
 A negative value for \fI*decpt\fP means that
 the decimal point is to the left of the start of the string.
 If the sign of
-\fInumber\fP is negative, \fI*sign\fP is set to a nonzero value,
+\fInumber\fP is negative, \fI*sign\fP is set to a non-zero value,
 otherwise it is set to 0.
 If
 .I number

man3/errno.3

@@ -57,7 +57,7 @@ may be a macro.
 \fIerrno\fP is thread-local; setting it in one thread
 does not affect its value in any other thread.
 
-Valid error numbers are all nonzero; \fIerrno\fP is never set to zero
+Valid error numbers are all non-zero; \fIerrno\fP is never set to zero
 by any library function.
 All the error names specified by POSIX.1
 must have distinct values, with the exception of

man3/error.3

@@ -54,7 +54,7 @@ and then outputs to
 the program name, a colon and a space, the message specified by the
 .BR printf (3)-style
 format string \fIformat\fP, and, if \fIerrnum\fP is
-nonzero, a second colon and a space followed by the string given by
+non-zero, a second colon and a space followed by the string given by
 \fBperror(\fIerrnum\fB)\fP.
 Any arguments required for
 .I format
@@ -74,7 +74,7 @@ initially has the same value as
 The value of this variable can be modified to change the output of
 .BR error ().
 
-If \fIstatus\fP has a nonzero value, then
+If \fIstatus\fP has a non-zero value, then
 .BR error ()
 calls
 .BR exit (3)
@@ -100,7 +100,7 @@ The preprocessor values \fB__LINE__\fP and
 but other values can also be used.
 For example, these arguments could refer to a location in an input file.
 
-If the global variable \fIerror_one_per_line\fP is set nonzero,
+If the global variable \fIerror_one_per_line\fP is set non-zero,
 a sequence of
 .BR error_at_line ()
 calls with the

man3/ether_aton.3

@@ -77,14 +77,14 @@ The
 function maps an Ethernet address to the
 corresponding hostname in
 .I /etc/ethers
-and returns nonzero if it cannot be found.
+and returns non-zero if it cannot be found.
 .PP
 The
 .BR ether_hostton ()
 function maps a hostname to the
 corresponding Ethernet address in
 .I /etc/ethers
-and returns nonzero if it cannot be found.
+and returns non-zero if it cannot be found.
 .PP
 The
 .BR ether_line ()
@@ -92,7 +92,7 @@ function parses a line in
 .I /etc/ethers
 format (ethernet address followed by whitespace followed by
 hostname; '#' introduces a comment) and returns an address
-and hostname pair, or nonzero if it cannot be parsed.
+and hostname pair, or non-zero if it cannot be parsed.
 The buffer pointed to by
 .I hostname
 must be sufficiently long, for example, have the same length as

man3/exit.3

@@ -100,7 +100,7 @@ The use of
 and
 .B EXIT_FAILURE
 is slightly more portable
-(to non-Unix environments) than the use of 0 and some nonzero value
+(to non-Unix environments) than the use of 0 and some non-zero value
 like 1 or \-1.
 In particular, VMS uses a different convention.
 .LP

man3/fenv.3

@@ -206,7 +206,7 @@ As before, the object
 .I *envp
 must be known to be valid.
 .SH "RETURN VALUE"
-These functions return zero on success and nonzero if an error occurred.
+These functions return zero on success and non-zero if an error occurred.
 .\" Earlier seven of these functions were listed as returning void.
 .\" This was corrected in Corrigendum 1 (ISO/IEC 9899:1999/Cor.1:2001(E))
 .\" of the C99 Standard.

man3/ferror.3

@@ -70,7 +70,7 @@ The function
 .BR feof ()
 tests the end-of-file indicator for the stream pointed to by
 .IR stream ,
-returning nonzero if it is set.
+returning non-zero if it is set.
 The end-of-file indicator can only be
 cleared by the function
 .BR clearerr ().
@@ -79,7 +79,7 @@ The function
 .BR ferror ()
 tests the error indicator for the stream pointed to by
 .IR stream ,
-returning nonzero if it is set.
+returning non-zero if it is set.
 The error indicator can only be reset by the
 .BR clearerr ()
 function.

man3/finite.3

@@ -71,12 +71,12 @@ _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE
 .SH DESCRIPTION
 The
 .BR finite ()
-functions return a nonzero value if \fIx\fP is neither infinite
+functions return a non-zero value if \fIx\fP is neither infinite
 nor a "not-a-number" (NaN) value, and 0 otherwise.
 
 The
 .BR isnan ()
-functions return a nonzero value if \fIx\fP is a NaN value,
+functions return a non-zero value if \fIx\fP is a NaN value,
 and 0 otherwise.
 
 The

man3/flockfile.3

@@ -48,7 +48,7 @@ The stdio functions are thread-safe.
 This is achieved by assigning
 to each
 .I FILE
-object a lockcount and (if the lockcount is nonzero)
+object a lockcount and (if the lockcount is non-zero)
 an owning thread.
 For each library call, these functions wait until the
 .I FILE
@@ -110,7 +110,7 @@ the lockcount otherwise.
 The
 .BR ftrylockfile ()
 function returns zero for success
-(the lock was obtained), and nonzero for failure.
+(the lock was obtained), and non-zero for failure.
 .SH ERRORS
 None.
 .SH "CONFORMING TO"

man3/fnmatch.3

@@ -89,7 +89,7 @@ Zero if
 matches
 .IR pattern ,
 .B FNM_NOMATCH
-if there is no match or another nonzero value if there is an error.
+if there is no match or another non-zero value if there is an error.
 .SH "CONFORMING TO"
 POSIX.2.
 The

man3/fpathconf.3

@@ -115,7 +115,7 @@ The corresponding macro is
 .BR _POSIX_PIPE_BUF .
 .TP
 .B _PC_CHOWN_RESTRICTED
-returns nonzero if the
+returns non-zero if the
 .BR chown (2)
 call may not be used on this file.
 If
@@ -128,14 +128,14 @@ The corresponding macro is
 .BR _POSIX_CHOWN_RESTRICTED .
 .TP
 .B _PC_NO_TRUNC
-returns nonzero if accessing filenames longer than
+returns non-zero if accessing filenames longer than
 .B _POSIX_NAME_MAX
 generates an error.
 The corresponding macro is
 .BR _POSIX_NO_TRUNC .
 .TP
 .B _PC_VDISABLE
-returns nonzero if special character processing can be disabled, where
+returns non-zero if special character processing can be disabled, where
 .I fd
 or
 .I path

man3/fpclassify.3

@@ -80,16 +80,16 @@ normal floating-point number.
 The other macros provide a short answer to some standard questions.
 .TP
 .BI isfinite( x )
-returns a nonzero value if
+returns a non-zero value if
 .br
 (fpclassify(x) != FP_NAN && fpclassify(x) != FP_INFINITE)
 .TP
 .BI isnormal( x )
-returns a nonzero value if
+returns a non-zero value if
 (fpclassify(x) == FP_NORMAL)
 .TP
 .BI isnan( x )
-returns a nonzero value if
+returns a non-zero value if
 (fpclassify(x) == FP_NAN)
 .TP
 .BI isinf( x )
@@ -103,7 +103,7 @@ C99
 .SH NOTES
 In glibc 2.01 and earlier,
 .BR isinf ()
-returns a nonzero value (actually: 1) if
+returns a non-zero value (actually: 1) if
 .I x
 is an infinity (positive or negative).
 (This is all that C99 requires.)

man3/ftime.3

@@ -54,7 +54,7 @@ Here \fItime\fP is the number of seconds since the Epoch,
 \fImillitm\fP is the number of milliseconds since \fItime\fP
 seconds since the Epoch, \fItimezone\fP is the local time zone
 measured in minutes of time west of Greenwich, and \fIdstflag\fP
-is a flag that, if nonzero, indicates that Daylight Saving time
+is a flag that, if non-zero, indicates that Daylight Saving time
 applies locally during the appropriate part of the year.
 .LP
 These days the contents of the \fItimezone\fP and \fIdstflag\fP

man3/ftok.3

@@ -44,7 +44,7 @@ function uses the identity of the file named by the given
 (which must refer to an existing, accessible file)
 and the least significant 8 bits of
 .I proj_id
-(which must be nonzero) to generate a
+(which must be non-zero) to generate a
 .I key_t
 type System V IPC key, suitable for use with
 .BR msgget (2),

man3/ftw.3

@@ -121,7 +121,7 @@ that it is undefined whether \fBFTW_NS\fP or \fBFTW_SL\fP (see below)
 is passed in
 .IR typeflag .
 .PP
-To stop the tree walk, \fIfn\fP() returns a nonzero value; this
+To stop the tree walk, \fIfn\fP() returns a non-zero value; this
 value will become the return value of
 .BR ftw ().
 As long as \fIfn\fP() returns 0,
@@ -135,7 +135,7 @@ failure), in which case it will return \-1.
 Because
 .BR ftw ()
 uses dynamic data structures, the only safe way to
-exit out of a tree walk is to return a nonzero value from \fIfn\fP().
+exit out of a tree walk is to return a non-zero value from \fIfn\fP().
 To allow a signal to terminate the walk without causing a memory leak,
 have the handler set a global flag that is checked by \fIfn\fP().
 \fIDon't\fP use
@@ -290,7 +290,7 @@ which has depth 0).
 .SH "RETURN VALUE"
 These functions return 0 on success, and \-1 if an error occurs.
 
-If \fIfn\fP() returns nonzero,
+If \fIfn\fP() returns non-zero,
 then the tree walk is terminated and the value returned by \fIfn\fP()
 is returned as the result of
 .BR ftw ()
@@ -300,7 +300,7 @@ or
 If
 .BR nftw ()
 is called with the \fBFTW_ACTIONRETVAL\fP flag,
-then the only nonzero value that should be used by \fIfn\fP()
+then the only non-zero value that should be used by \fIfn\fP()
 to terminate the tree walk is \fBFTW_STOP\fP,
 and that value is returned as the result of
 .BR nftw ().

man3/fwide.3

@@ -48,7 +48,7 @@ operation).
 Once a stream has an orientation, it cannot be changed and persists until
 the stream is closed.
 .PP
-When \fImode\fP is nonzero, the
+When \fImode\fP is non-zero, the
 .BR fwide ()
 function first attempts to set
 \fIstream\fP's orientation (to wide-character oriented if \fImode\fP > 0, or

man3/getaddrinfo.3

@@ -371,7 +371,7 @@ flags respectively to be used in the IDNA handling.
 .\" #define EAI_IDN_ENCODE  -105  /* IDN encoding failed.  */
 .\" #endif
 .BR getaddrinfo ()
-returns 0 if it succeeds, or one of the following nonzero error codes:
+returns 0 if it succeeds, or one of the following non-zero error codes:
 .TP
 .B EAI_ADDRFAMILY
 The specified network host does not have any network addresses in the

man3/getdate.3

@@ -150,7 +150,7 @@ thread-safe variant.
 The functionality is the same.
 The result is returned in the buffer pointed to by
 .I res
-and in case of an error the return value is nonzero with the same
+and in case of an error the return value is non-zero with the same
 values as given above for
 .IR getdate_err .
 .LP

man3/gethostbyname.3

@@ -374,7 +374,7 @@ will point to the result on success.  In case of an error
 or if no entry is found
 .I result
 will be NULL.
-The functions return 0 on success and a nonzero error number on failure.
+The functions return 0 on success and a non-zero error number on failure.
 In addition to the errors returned by the non-reentrant
 versions of these functions, if
 .I buf

man3/getlogin.3

@@ -97,7 +97,7 @@ precisely because the user can set \fBLOGNAME\fP arbitrarily.
 returns a pointer to the user name when successful,
 and NULL on failure.
 .BR getlogin_r ()
-returns 0 when successful, and nonzero on failure.
+returns 0 when successful, and non-zero on failure.
 .SH ERRORS
 POSIX specifies
 .TP

man3/getnameinfo.3

@@ -126,7 +126,7 @@ flags respectively to be used in the IDNA handling.
 On success 0 is returned, and node and service names, if requested,
 are filled with null-terminated strings, possibly truncated to fit
 the specified buffer lengths.
-On error one of the following nonzero error codes is returned:
+On error one of the following non-zero error codes is returned:
 .TP
 .B EAI_AGAIN
 The name could not be resolved at this time.

man3/getopt.3

@@ -167,7 +167,7 @@ returns ':' instead of '?' to
 indicate a missing option argument.
 If an error was detected, and
 the first character of \fIoptstring\fP is not a colon, and
-the external variable \fIopterr\fP is nonzero (which is the default),
+the external variable \fIopterr\fP is non-zero (which is the default),
 .BR getopt ()
 prints an error message.
 .PP

man3/getrpcent.3

@@ -60,7 +60,7 @@ reads the next line of the file, opening the file if necessary.
 opens and rewinds the file.
 If the
 .I stayopen
-flag is nonzero,
+flag is non-zero,
 the net data base will not be closed after each call to
 .BR getrpcent ()
 (either directly, or indirectly through one of

man3/glob.3

@@ -226,7 +226,7 @@ or
 .BR stat (2).
 If
 .I errfunc
-returns nonzero, or if
+returns non-zero, or if
 .B GLOB_ERR
 is set,
 .BR glob ()

man3/hsearch.3

@@ -118,7 +118,7 @@ must be zeroed before the first call to
 and
 .BR hcreate_r ()
 return 0 when allocation of the memory
-for the hash table fails, nonzero otherwise.
+for the hash table fails, non-zero otherwise.
 .LP
 .BR hsearch ()
 returns NULL if \fIaction\fP is \fBENTER\fP and
@@ -127,7 +127,7 @@ cannot be found in the hash table.
 .LP
 .BR hsearch_r ()
 returns 0 if \fIaction\fP is \fBENTER\fP and
-the hash table is full, and nonzero otherwise.
+the hash table is full, and non-zero otherwise.
 .SH ERRORS
 POSIX documents
 .TP

man3/ilogb.3

@@ -56,19 +56,19 @@ to zero and call
 before calling these functions.
 On return, if
 .I errno
-is nonzero or
+is non-zero or
 .I fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW)
-is nonzero, an error has occurred.
+is non-zero, an error has occurred.
 .LP
 If an error occurs and
 .I "(math_errhandling & MATH_ERRNO)"
-is nonzero, then
+is non-zero, then
 .I errno
 is set to
 .BR EDOM .
 If an error occurs and
 .I "(math_errhandling & MATH_ERREXCEPT)"
-is nonzero, then the invalid floating-point exception is raised.
+is non-zero, then the invalid floating-point exception is raised.
 .LP
 A domain error occurs when
 .I x

man3/inet.3

@@ -72,7 +72,7 @@ standard numbers-and-dots notation into binary data and stores it in
 the structure that \fIinp\fP points to.
 .BR inet_aton ()
 returns
-nonzero if the address is valid, zero if not.
+non-zero if the address is valid, zero if not.
 .PP
 The
 .BR inet_addr ()

man3/isalpha.3

@@ -150,7 +150,7 @@ checks for a hexadecimal digits, that is, one of
 .br
 .BR "0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F" .
 .SH "RETURN VALUE"
-The values returned are nonzero if the character
+The values returned are non-zero if the character
 .I c
 falls into the tested class, and a zero value
 if not.

man3/iswalnum.3

@@ -53,7 +53,7 @@ to 'Z', 'a' to 'z' and the digits '0' to '9'.
 .SH "RETURN VALUE"
 The
 .BR iswalnum ()
-function returns nonzero
+function returns non-zero
 if \fIwc\fP is a wide character
 belonging to the wide-character class "alnum".
 Otherwise it returns zero.

man3/iswalpha.3

@@ -57,7 +57,7 @@ to 'Z' and 'a' to 'z'.
 .SH "RETURN VALUE"
 The
 .BR iswalpha ()
-function returns nonzero
+function returns non-zero
 if \fIwc\fP is a wide character
 belonging to the wide-character class "alpha".
 Otherwise it returns zero.

man3/iswblank.3

@@ -55,7 +55,7 @@ and the control character '\\t'.
 .SH "RETURN VALUE"
 The
 .BR iswblank ()
-function returns nonzero
+function returns non-zero
 if \fIwc\fP is a wide character
 belonging to the wide-character class "blank".
 Otherwise it returns zero.

man3/iswcntrl.3

@@ -39,7 +39,7 @@ but not vice versa.
 .SH "RETURN VALUE"
 The
 .BR iswcntrl ()
-function returns nonzero if \fIwc\fP is a
+function returns non-zero if \fIwc\fP is a
 wide character belonging to the wide-character class "cntrl".
 Otherwise it returns zero.
 .SH "CONFORMING TO"

man3/iswctype.3

@@ -25,7 +25,7 @@ If \fIwc\fP is a wide character having the character property designated by
 \fIdesc\fP (or in other words: belongs to the character class designated by
 \fIdesc\fP), the
 .BR iswctype ()
-function returns nonzero.
+function returns non-zero.
 Otherwise it
 returns zero.
 If \fIwc\fP is
@@ -38,7 +38,7 @@ function.
 .SH "RETURN VALUE"
 The
 .BR iswctype ()
-function returns nonzero if
+function returns non-zero if
 the \fIwc\fP has the designated
 property.
 Otherwise it returns 0.

man3/iswdigit.3

@@ -56,7 +56,7 @@ contains exactly the digits '0' to '9'.
 .SH "RETURN VALUE"
 The
 .BR iswdigit ()
-function returns nonzero
+function returns non-zero
 if \fIwc\fP is a wide character
 belonging to the wide-character class "digit".
 Otherwise it returns zero.

man3/iswgraph.3

@@ -49,7 +49,7 @@ the wide-character classes "alnum" and "punct".
 .SH "RETURN VALUE"
 The
 .BR iswgraph ()
-function returns nonzero
+function returns non-zero
 if \fIwc\fP is a wide character
 belonging to the wide-character class "graph".
 Otherwise it returns zero.

man3/iswlower.3

@@ -61,7 +61,7 @@ to 'z'.
 .SH "RETURN VALUE"
 The
 .BR iswlower ()
-function returns nonzero
+function returns non-zero
 if \fIwc\fP is a wide character
 belonging to the wide-character class "lower".
 Otherwise it returns zero.

man3/iswprint.3

@@ -36,7 +36,7 @@ The wide-character class "print" contains the wide-character class "graph".
 .SH "RETURN VALUE"
 The
 .BR iswprint ()
-function returns nonzero if \fIwc\fP is a
+function returns non-zero if \fIwc\fP is a
 wide character belonging to the wide-character class "print".
 Otherwise it returns zero.
 .SH "CONFORMING TO"

man3/iswpunct.3

@@ -47,7 +47,7 @@ the wide-character class
 .SH "RETURN VALUE"
 The
 .BR iswpunct ()
-function returns nonzero
+function returns non-zero
 if \fIwc\fP is a wide-character
 belonging to the wide-character class "punct".
 Otherwise it returns zero.

man3/iswspace.3

@@ -43,7 +43,7 @@ and the control characters '\\f', '\\n', '\\r', '\\t', '\\v'.
 .SH "RETURN VALUE"
 The
 .BR iswspace ()
-function returns nonzero if \fIwc\fP is a wide character
+function returns non-zero if \fIwc\fP is a wide character
 belonging to the wide-character class "space".
 Otherwise it returns zero.
 .SH "CONFORMING TO"

man3/iswupper.3

@@ -54,7 +54,7 @@ to 'Z'.
 .SH "RETURN VALUE"
 The
 .BR iswupper ()
-function returns nonzero if \fIwc\fP is a wide character
+function returns non-zero if \fIwc\fP is a wide character
 belonging to the wide-character class "upper".
 Otherwise it returns zero.
 .SH "CONFORMING TO"

man3/iswxdigit.3

@@ -48,7 +48,7 @@ to 'F', 'a' to 'f' and the digits '0' to '9'.
 .SH "RETURN VALUE"
 The
 .BR iswxdigit ()
-function returns nonzero if \fIwc\fP is a wide character
+function returns non-zero if \fIwc\fP is a wide character
 belonging to the wide-character class "xdigit".
 Otherwise it returns zero.
 .SH "CONFORMING TO"

man3/lgamma.3

@@ -92,9 +92,9 @@ to zero and call
 before calling these functions.
 On return, if
 .I errno
-is nonzero or
+is non-zero or
 .I fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW)
-is nonzero, an error has occurred.
+is non-zero, an error has occurred.
 .LP
 A range error occurs if
 .I x

man3/logb.3

@@ -88,18 +88,18 @@ to zero and call
 before calling these functions.
 On return, if
 .I errno
-is nonzero or
+is non-zero or
 .I fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW)
-is nonzero, an error has occurred.
+is non-zero, an error has occurred.
 .LP
 If an error occurs and
 .I "(math_errhandling & MATH_ERRNO)"
-is nonzero, then
+is non-zero, then
 .I errno is set to
 .BR ERANGE .
 If an error occurs and
 .I "(math_errhandling & MATH_ERREXCEPT)"
-is nonzero, then the divide-by-zero floating-point exception is raised.
+is non-zero, then the divide-by-zero floating-point exception is raised.
 .LP
 A pole error occurs when
 .I x

man3/longjmp.3

@@ -73,7 +73,7 @@ its \fIenv\fP argument.
 If the
 .BR sigsetjmp (3)
 call that set this
-\fIenv\fP used a nonzero \fIsavesigs\fP flag,
+\fIenv\fP used a non-zero \fIsavesigs\fP flag,
 .BR siglongjmp ()
 also
 restores the set of blocked signals.

man3/lrint.3

@@ -65,7 +65,7 @@ The rounded integer value.
 .B EDOM
 The magnitude of \fIx\fP is too large and
 .I "(math_errhandling & MATH_ERRNO)"
-is nonzero.
+is non-zero.
 .SH "CONFORMING TO"
 C99.
 .SH "SEE ALSO"

man3/lround.3

@@ -71,7 +71,7 @@ that of their arguments.
 .B EDOM
 The magnitude of \fIx\fP is too large and
 .I "(math_errhandling & MATH_ERRNO)"
-is nonzero.
+is non-zero.
 .SH "CONFORMING TO"
 C99.
 .SH "SEE ALSO"

man3/lsearch.3

@@ -46,7 +46,7 @@ The comparison function referenced by
 \fIcompar\fP is expected to have two arguments which point to the
 \fIkey\fP object and to an array member, in that order, and which
 returns zero if the \fIkey\fP object matches the array member, and
-nonzero otherwise.
+non-zero otherwise.
 .PP
 If
 .BR lsearch ()

man3/malloc.3

@@ -218,7 +218,7 @@ if set to 2,
 is called immediately;
 if set to 3, a diagnostic message is printed on \fIstderr\fP
 and the program is aborted.
-Using a nonzero
+Using a non-zero
 .B MALLOC_CHECK_
 value can be useful because otherwise
 a crash may happen much later, and the true cause for the problem

man3/mblen.3

@@ -51,7 +51,7 @@ function
 .\" The Dinkumware doc and the Single Unix specification say this, but
 .\" glibc doesn't implement this.
 resets the shift state, only known to this function, to the initial state, and
-returns nonzero if the encoding has nontrivial shift state, or zero if the
+returns non-zero if the encoding has nontrivial shift state, or zero if the
 encoding is stateless.
 .SH "RETURN VALUE"
 The

man3/mbsinit.3

@@ -68,7 +68,7 @@ tests whether \fI*ps\fP corresponds to an
 initial state.
 .SH "RETURN VALUE"
 .BR mbsinit ()
-returns nonzero if \fI*ps\fP is an initial state, or if
+returns non-zero if \fI*ps\fP is an initial state, or if
 \fIps\fP is a null pointer.
 Otherwise it returns 0.
 .SH "CONFORMING TO"

man3/mbtowc.3

@@ -59,7 +59,7 @@ function
 .\" glibc doesn't implement this.
 resets the shift state, only known to this function,
 to the initial state, and
-returns nonzero if the encoding has nontrivial shift state, or zero if the
+returns non-zero if the encoding has nontrivial shift state, or zero if the
 encoding is stateless.
 .SH "RETURN VALUE"
 If \fIs\fP is not NULL, the
@@ -71,7 +71,7 @@ or \-1 upon failure.
 If \fIs\fP is NULL, the
 .BR mbtowc ()
 function
-returns nonzero if the encoding
+returns non-zero if the encoding
 has nontrivial shift state, or zero if the encoding is stateless.
 .SH "CONFORMING TO"
 C99

man3/on_exit.3

@@ -58,7 +58,7 @@ and the \fIarg\fP argument from
 The
 .BR on_exit ()
 function returns the value 0 if successful; otherwise
-it returns a nonzero value.
+it returns a non-zero value.
 .SH "CONFORMING TO"
 This function comes from SunOS 4, but is also present in
 libc4, libc5 and glibc.

man3/printf.3

@@ -246,7 +246,7 @@ For
 .B x
 and
 .B X
-conversions, a nonzero result has the string `0x' (or `0X' for
+conversions, a non-zero result has the string `0x' (or `0X' for
 .B X
 conversions) prepended to it.
 For
@@ -367,7 +367,7 @@ For example, since glibc 2.2.3 this will give Arabic-Indic digits
 in the Persian (`fa_IR') locale.
 .\" outdigits keyword in locale file
 .SS "The field width"
-An optional decimal digit string (with nonzero first digit) specifying
+An optional decimal digit string (with non-zero first digit) specifying
 a minimum field width.
 If the converted value has fewer characters
 than the field width, it will be padded with spaces on the left
@@ -685,7 +685,7 @@ if an exact representation in base 2 exists
 and otherwise is sufficiently large to distinguish values of type
 .IR double .
 The digit before the decimal point is unspecified for non-normalized
-numbers, and nonzero but otherwise unspecified for normalized numbers.
+numbers, and non-zero but otherwise unspecified for normalized numbers.
 .TP
 .B c
 If no

man3/ptsname.3

@@ -49,7 +49,7 @@ On failure, a NULL pointer is returned.
 On success,
 .BR ptsname_r ()
 returns 0.
-On failure, a nonzero value is returned
+On failure, a non-zero value is returned
 and
 .I errno
 is set to indicate the error.

man3/putenv.3

@@ -66,7 +66,7 @@ so altering the string changes the environment.
 The
 .BR putenv ()
 function returns zero on success,
-or nonzero if an error occurs.
+or non-zero if an error occurs.
 .SH ERRORS
 .TP
 .B ENOMEM

man3/putgrent.3

@@ -33,7 +33,7 @@ struct group {
 .fi
 .in
 .SH "RETURN VALUE"
-The function returns zero on success, and a nonzero value on error.
+The function returns zero on success, and a non-zero value on error.
 .SH "CONFORMING TO"
 This function is a GNU extension.
 .SH "SEE ALSO"

man3/raise.3

@@ -42,7 +42,7 @@ It is equivalent to
 .BI "kill(getpid(), " "sig" );
 .RE
 .SH "RETURN VALUE"
-0 on success, nonzero for failure.
+0 on success, non-zero for failure.
 .SH "CONFORMING TO"
 C89, C99.
 .SH "SEE ALSO"

man3/rcmd.3

@@ -116,7 +116,7 @@ and
 .IR stdout .
 If
 .I fd2p
-is nonzero, then an auxiliary channel to a control
+is non-zero, then an auxiliary channel to a control
 process will be set up, and a descriptor for it will be placed
 in
 .IR *fd2p .

man3/regex.3

@@ -220,7 +220,7 @@ If both
 .I errbuf
 and
 .I errbuf_size
-are nonzero,
+are non-zero,
 .I errbuf
 is filled in with the first
 .I "errbuf_size \- 1"

man3/rexec.3

@@ -90,7 +90,7 @@ and
 .IR stdout .
 If
 .I fd2p
-is nonzero, then an auxiliary channel to a control
+is non-zero, then an auxiliary channel to a control
 process will be setup, and a descriptor for it will be placed
 in
 .IR *fd2p .

man3/rpc.3

@@ -791,7 +791,7 @@ is zero, the service is not registered with the
 service.
 If
 .I protocol
-is nonzero, then a mapping of the triple
+is non-zero, then a mapping of the triple
 .RI [ prognum , versnum , protocol\fR]
 to
 \fB\%xprt\->xp_port\fR

man3/rpmatch.3

@@ -71,7 +71,7 @@ of \fIresponse\fP is unrecognized.
 .SH ERRORS
 A return value of \-1 may indicate either an invalid input, or some
 other error.
-It is incorrect to only test if the return value is nonzero.
+It is incorrect to only test if the return value is non-zero.
 
 .BR rpmatch ()
 can fail for any of the reasons that

man3/rtnetlink.3

@@ -49,7 +49,7 @@ is the running length of the attribute buffer.
 When not true then you must assume there are no more attributes in the
 message, even if
 .I attrlen
-is nonzero.
+is non-zero.
 .PP
 .BI RTA_DATA( rta )
 returns a pointer to the start of this attribute's data.

man3/scandir.3

@@ -66,7 +66,7 @@ The
 function scans the directory \fIdir\fP, calling
 \fIfilter\fP() on each directory entry.
 Entries for which
-\fIfilter\fP() returns nonzero are stored in strings allocated via
+\fIfilter\fP() returns non-zero are stored in strings allocated via
 .BR malloc (3),
 sorted using
 .BR qsort (3)