freebsd man page for significand

IEEE_TEST(3)						   BSD Library Functions Manual 					      IEEE_TEST(3)

NAME
     scalb, scalbf, significand, significandf -- IEEE test functions

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     scalb(double x, double n);

     float
     scalbf(float x, float n);

     double
     significand(double x);

     float
     significandf(float x);

DESCRIPTION
     These functions allow users to test conformance to IEEE Std 754-1985.  Their use is not otherwise recommended.

     scalb(x, n) and scalbf(x, n) return x*(2**n) computed by exponent manipulation.  If n is not an integer, +-infinity, or an NaN, the result is
     unspecified.

     significand(x) and significandf(x) return sig, where x := sig * 2**n with 1 <= sig < 2.  significand(x) and significandf(x) are not defined
     when x is 0, +-infinity, or NaN.

SEE ALSO
     ieee(3), math(3)

STANDARDS
     IEEE Std 754-1985

BSD
								 November 6, 2005							       BSD