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 porta‐
ble 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 ALSOexp(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