signbit man page on SmartOS

signbit man page on SmartOS

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signbit(3M)		Mathematical Library Functions		   signbit(3M)

NAME
       signbit - test sign

SYNOPSIS
       c99 [ flag... ] file... -lm [ library... ]
       #include <math.h>

       int signbit(real-floating x);

DESCRIPTION
       The  signbit()  macro determines whether the sign of its argument value
       is negative. NaNs, zeros, and infinities have a sign bit.

RETURN VALUES
       The signbit() macro returns a non-zero value if and only if the sign of
       its argument value is negative.

ERRORS
       No errors are defined.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Standard			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │MT-Level		     │MT-Safe			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       fpclassify(3M),	 isfinite(3M),	 isinf(3M),  isnan(3M),	 isnormal(3M),
       math.h(3HEAD), attributes(5), standards(5)

SunOS 5.11			  12 Jul 2006			   signbit(3M)

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