frexpf3
Convert floating-point number to fractional and integral components
Part of frexp(3).
Usage
double
float
long double
Library
Math Library (libm, -lm)
Overview
The frexp(), frexpf() and frexpl() functions break a floating-point number into a normalized fraction and an integral power of 2. They store the integer in the int object pointed to by exp.
Return values
These functions return the value x, such that x is a double with magnitude in the interval [1/2, 1) or zero, and value equals x times 2 raised to the power *exp. If value is zero, both parts of the result are zero.
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 to FreeBSD 6.0-RELEASE