FPCLASSIFY(3M) Mathematical Library Functions FPCLASSIFY(3M)
NAME
fpclassify - classify real floating type
SYNOPSIS
c99 [
flag... ]
file...
-lm [
library... ]
#include <math.h>
int fpclassify(
real-floating x);
DESCRIPTION
The
fpclassify() macro classifies its argument value as NaN,
infinite, normal, subnormal, or zero. First, an argument represented
in a format wider than its semantic type is converted to its semantic
type. Then classification is based on the type of the argument.
RETURN VALUES
The
fpclassify() macro returns the value of the number classification
macro appropriate to the value of its argument.
ERRORS
No errors are defined.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+----------------------------+-----------------------------+
|Interface Stability | Standard |
+----------------------------+-----------------------------+
|MT-Level | MT-Safe |
+----------------------------+-----------------------------+
SEE ALSO
math.h(3HEAD),
isfinite(3M),
isinf(3M),
isnan(3M),
isnormal(3M),
signbit(3M),
attributes(7),
standards(7)SunOS 5.11 July 12, 2006 FPCLASSIFY(3M)
