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
