POW(3) BSD 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 return 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 por-
table 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.
BSD
September 13, 2011 BSD
