NAN(3) | Library Functions Manual | NAN(3) |
nan
, nanf
,
nanl
—
#include <math.h>
double
nan
(const
char *tagp);
float
nanf
(const
char *tagp);
long double
nanl
(const
char *tagp);
nan
("n-char-sequence")
is equivalent to the call
strtod
("NAN(n-char-sequence)",
NULL). The call
nan
("") is equivalent
to the call
strtod
("NAN()",
NULL).
The nanf
() and
nanl
() functions are equivalent to
nan
() but substituting
strtof
() and strtold
(),
respectively.
nan
(), nanf
(), and
nanl
() functions return a quiet NaN as specified by
tagp.
nan
(), nanf
(), and
nanl
() functions return zero.
nan
(), nanf
(), and
nanl
() functions conform to ISO/IEC
9899:1999 (“ISO C99”).
March 15, 2006 | NetBSD 9.0 |