DragonFly On-Line Manual Pages


IEEE_TEST(3)	      DragonFly 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 manipu- lation. 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 DragonFly 3.9 November 6, 2005 DragonFly 3.9