POW(3) BSD Programmer's Manual POW(3)
pow, powf - power functions
libm
#include <math.h>
double
pow(double x, double y);
float
powf(float x, float y);
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 portable
application should nevertheless ensure that y is an integer value whenev-
er x is negative.
Upon successful completion, the described functions return x^y.
exp(3), log(3)
The described functions conform to ISO/IEC 9899:1999 ("ISO C99").
The history of the power functions dates back to Version 6 AT&T UNIX.
MirOS BSD #10-current September 13, 2011 1
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