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SYNOPSIS: Fixed feature test macro requirements.
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\"
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.TH FINITE 3 2007-07-26 "" "Linux Programmer's Manual"
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.TH FINITE 3 2008-07-29 "" "Linux Programmer's Manual"
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.SH NAME
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finite, finitef, finitel, isinf, isinff, isinfl, isnan, isnanf, isnanl \-
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BSD floating-point classification functions
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@ -58,15 +58,21 @@ Feature Test Macro Requirements for glibc (see
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.BR finitel ():
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_BSD_SOURCE || _SVID_SOURCE
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.br
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.BR isinf (),
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.BR isinf ():
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_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
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.I cc\ -std=c99
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.br
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.BR isinff (),
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.BR isinfl ():
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_BSD_SOURCE || _SVID_SOURCE
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.br
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.BR isnan (),
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.BR isnan ():
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_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE || _ISOC99_SOURCE;
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.I cc\ -std=c99
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.br
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.BR isnanf (),
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.BR isnanl ():
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_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE
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_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600
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.ad b
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.SH DESCRIPTION
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The
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@ -81,7 +87,7 @@ and 0 otherwise.
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The
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.BR isinf ()
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functions return 1 if \fIx\fP is positive infinity, \-1 is \fIx\fP
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functions return 1 if \fIx\fP is positive infinity, \-1 if \fIx\fP
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is negative infinity, and 0 otherwise.
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.SH NOTES
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Note that these functions are obsolete.
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