mirror of https://github.com/mkerrisk/man-pages
80 lines
2.0 KiB
Plaintext
80 lines
2.0 KiB
Plaintext
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.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "BCOPY" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" bcopy
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.SH NAME
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bcopy \- memory operations (\fBLEGACY\fP)
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.SH SYNOPSIS
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.LP
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\fB#include <strings.h>
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.br
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.sp
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void bcopy(const void *\fP\fIs1\fP\fB, void *\fP\fIs2\fP\fB, size_t\fP
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\fIn\fP\fB); \fP
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\fB
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.br
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\fP
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.SH DESCRIPTION
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.LP
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The \fIbcopy\fP() function shall copy \fIn\fP bytes from the area
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pointed to by \fIs1\fP to the area pointed to by
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\fIs2\fP.
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.LP
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The bytes are copied correctly even if the area pointed to by \fIs1\fP
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overlaps the area pointed to by \fIs2\fP.
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.SH RETURN VALUE
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.LP
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The \fIbcopy\fP() function shall not return a value.
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.SH ERRORS
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.LP
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No errors are defined.
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.LP
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\fIThe following sections are informative.\fP
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.SH EXAMPLES
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.LP
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None.
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.SH APPLICATION USAGE
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.LP
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The \fImemmove\fP() function is preferred over this function.
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.LP
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The following are approximately equivalent (note the order of the
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arguments):
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.sp
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.RS
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.nf
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\fBbcopy(s1,s2,n) ~= memmove(s2,s1,n)
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\fP
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.fi
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.RE
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.LP
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For maximum portability, it is recommended to replace the function
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call to \fIbcopy\fP() as follows:
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.sp
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.RS
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.nf
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\fB#define bcopy(b1,b2,len) (memmove((b2), (b1), (len)), (void) 0)
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\fP
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.fi
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.RE
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.SH RATIONALE
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.LP
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None.
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.SH FUTURE DIRECTIONS
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.LP
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This function may be withdrawn in a future version.
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.SH SEE ALSO
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.LP
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\fImemmove\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
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\fI<strings.h>\fP
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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