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signbit
A test for a number that includes a signed bit
Compatibility:
This facility is compatible with the following targets:
Prototype:
#include <math.h>
int __signbit(long double x);
int __signbitd(double x);
int __signbit(float x);
Parameters:
Parameters for this facility are:
Return:
This facility is true if the sign of the argument value is negative.
See Also:
"fpclassify"
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Last updated: August 16, 2000