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NetBSD 6.1.5 - man page for nanf (netbsd section 3)

NAN(3)				   BSD Library Functions Manual 			   NAN(3)

NAME
     nan, nanf, nanl -- return quiet NaN

LIBRARY
     Math Library (libm, -lm)

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'').

BSD					  March 15, 2006				      BSD


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