MirBSD manpage: nan(3), nanf(3)

NAN(3)                     BSD Programmer's Manual                      NAN(3)

NAME

     nan, nanf - return quiet NaN

LIBRARY

     libm

SYNOPSIS

     #include <math.h>

     double
     nan(const char *tagp);

     float
     nanf(const char *tagp);

DESCRIPTION

     The call nan(, n-char-sequence"") is equivalent to the call strod(,
     NAN(n-char-sequence)"", NULL). The call nan(, "") is equivalent to the
     call strod(, NAN()"", NULL).

     The nanf() function is equivalent to nan() but substituting strtof().

RETURN VALUES

IEEE 754

     The nan() and nanf() functions return a quiet NaN as specified by tagp.

VAX

     The nan() and nanf() functions return zero.

SEE ALSO

     math(3), strtod(3)

STANDARDS

     The nan() and nanf() functions conform to ISO/IEC 9899:1999 ("ISO C99").

MirBSD #10-current             February 9, 2014                              1