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Command: pow | Section: 3 | Source: NetBSD | File: pow.3
POW(3) FreeBSD Library Functions Manual POW(3)
NAME
pow, powf - power functions
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
pow(double x, double y);
float
powf(float x, float y);
DESCRIPTION
The pow() family of functions returns x raised to the power of y.
If x is negative and y is not an integer, the global variable errno is
set to EDOM, and on VAX a reserved operand fault is generated. A
portable application should nevertheless ensure that y is an integer
value whenever x is negative.
RETURN VALUES
Upon successful completion, the described functions return x^y.
SEE ALSO
exp(3), log(3)
STANDARDS
The described functions conform to ISO/IEC 9899:1999 ("ISO C99").
HISTORY
The history of the power functions dates back to Version 6 AT&T UNIX.
FreeBSD 14.1-RELEASE-p8 September 13, 2011 FreeBSD 14.1-RELEASE-p8