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Diffstat (limited to 'man3/nan.3')
| -rw-r--r-- | man3/nan.3 | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/man3/nan.3 b/man3/nan.3 index c80750d55..ec78471cd 100644 --- a/man3/nan.3 +++ b/man3/nan.3 @@ -3,7 +3,7 @@ .\" Based on glibc infopages .\" .\" Corrections by aeb -.TH NAN 3 2002-08-10 "GNU" "Linux Programmer's Manual" +.TH NAN 3 2007-07-26 "GNU" "Linux Programmer's Manual" .SH NAME nan, nanf, nanl \- return 'Not a Number' .SH SYNOPSIS @@ -16,6 +16,17 @@ nan, nanf, nanl \- return 'Not a Number' .BI "long double nanl(const char *" tagp ); .sp Compile with \fI\-std=c99\fP; link with \fI\-lm\fP. +.sp +.in -4n +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.in +.sp +.BR nan (), +.BR nanf (), +.BR nanl (): +_XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or +.I cc\ -std=c99 .SH DESCRIPTION These functions return a representation (determined by .IR tagp ) |