nan man page on CentOS

Man page or keyword search:  
man Server   8420 pages
apropos Keyword Search (all sections)
Output format
CentOS logo
[printable version]

NAN(3)			      libc math functions			NAN(3)

NAME
       nan, nanf, nanl - return 'Not a Number'

SYNOPSIS
       #include <math.h>

       double nan(const char *tagp);
       float nanf(const char *tagp);
       long double nanl(const char *tagp);

       Compile with -std=c99; link with -lm.

DESCRIPTION
       These functions return a representation (determined by tagp) of a quiet
       NaN. If the implementation does not support quiet NaNs, these functions
       return zero.

       The  call  nan("char-sequence")	is  equivalent	to  strtod ("NAN(char-
       sequence)",NULL) and similarly calls to nanf() and nanl()  are  equiva‐
       lent to analogous calls to strtof() and strtold().

       The  argument  tagp is used in an unspecified manner.  On IEEE 754 sys‐
       tems, there are many representations of NaN, and tagp selects one.   On
       other systems it may do nothing.

CONFORMING TO
       C99.  See  also	IEC 559 and the appendix with recommended functions in
       IEEE 754/IEEE 854.

SEE ALSO
       isnan(3), strtod(3)

GNU				  2002-08-10				NAN(3)
[top]

List of man pages available for CentOS

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net