MirOS Manual: nan(3), nanf(3)

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

NAME

     nan, nanf, nanl - return quiet NaN

LIBRARY

     libm

SYNOPSIS

     #include <math.h>

     double
     nan(const char *tagp);

     float
     nanf(const char *tagp);

     long double
     nanl(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() and nanl() functions are equivalent to nan() but substituting
     strtof() and strtold(), respectively.

RETURN VALUES

IEEE 754

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

VAX

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

SEE ALSO

     math(3), strtod(3)

STANDARDS

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

MirOS BSD #10-current           March 15, 2006                               1

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