carta
scalbf(3)

scalbf3

Ieee test functions

Part of ieee_test(3).

Usage

double

float

double

float

Library

Math Library (libm, -lm)

Overview

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, , or an , 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, , or .

History

  • FreeBSD 16.0-CURRENT (2026-10-27) to FreeBSD 15.0-RELEASE: the text shown here
  • FreeBSD 14.5-RELEASE to FreeBSD 13.3-RELEASE
  • FreeBSD 13.2-RELEASE to FreeBSD 13.0-RELEASE
  • FreeBSD 12.4-RELEASE
  • FreeBSD 12.3-RELEASE
  • FreeBSD 12.2-RELEASE
  • FreeBSD 12.1-RELEASE
  • FreeBSD 12.0-RELEASE
  • FreeBSD 11.4-RELEASE
  • FreeBSD 11.3-RELEASE
  • FreeBSD 11.2-RELEASE
  • FreeBSD 11.1-RELEASE
  • FreeBSD 11.0-RELEASE
  • FreeBSD 10.4-RELEASE
  • FreeBSD 10.3-RELEASE
  • FreeBSD 10.2-RELEASE
  • FreeBSD 10.1-RELEASE
  • FreeBSD 10.0-RELEASE
  • FreeBSD 9.3-RELEASE
  • FreeBSD 9.2-RELEASE
  • FreeBSD 9.1-RELEASE
  • FreeBSD 9.0-RELEASE
  • FreeBSD 8.4-RELEASE
  • FreeBSD 8.3-RELEASE
  • FreeBSD 8.2-RELEASE
  • FreeBSD 8.1-RELEASE
  • FreeBSD 8.0-RELEASE
  • FreeBSD 7.4-RELEASE
  • FreeBSD 7.3-RELEASE
  • FreeBSD 7.2-RELEASE
  • FreeBSD 7.1-RELEASE
  • FreeBSD 7.0-RELEASE
  • FreeBSD 6.4-RELEASE
  • FreeBSD 6.3-RELEASE
  • FreeBSD 6.2-RELEASE to FreeBSD 5.3-RELEASE
  • FreeBSD 5.2.1-RELEASE to FreeBSD 5.0-RELEASE
  • FreeBSD 4.11-RELEASE to FreeBSD 4.5-RELEASE
  • FreeBSD 4.4-RELEASE
  • FreeBSD 4.3-RELEASE
  • FreeBSD 4.2-RELEASE to FreeBSD 4.0-RELEASE
  • FreeBSD 3.5.1-RELEASE to FreeBSD 3.3-RELEASE
  • FreeBSD 3.2-RELEASE to FreeBSD 3.0-RELEASE
  • FreeBSD 2.2.9-RELEASE
  • FreeBSD 2.2.8-RELEASE to FreeBSD 2.2.2-RELEASE

Standards

IEEE Std 754-1985

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.