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Command: scalb | Section: 3 | Source: FreeBSD | File: scalb.3.gz
IEEE_TEST(3) FreeBSD 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
FreeBSD 14.1-RELEASE-p8 November 6, 2005 FreeBSD 14.1-RELEASE-p8