significand(3M)
NAME
significand - significand function
SYNOPSIS
cc [ flag ... ] file ... -lm [ library ... ]
#include <math.h>
double significand(double x);
DESCRIPTION
The significand() function, along with the logb(3M) and
scalb(3M) functions, allows users to verify compliance to
ANSI/IEEE Std 754-1985 by running certain test vectors dis-
tributed by the University of California.
If x equals sig * 2**n with 1 < sig < 2, then significand(x)
returns sig for exercising the fraction-part(F) test vector.
significand(x) is not defined when x is either 0, _Inf or
NaN.
RETURN VALUES
For exceptional cases, matherr(3M) tabulates the values to
be returned as dictated by various Standards.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| MT-Level | MT-Safe |
|_____________________________|_____________________________|
SEE ALSO
logb(3M), matherr(3M), scalb(3M), attributes(5)
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