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POW(3) 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. NetBSD 8.0 September 13, 2011 NetBSD 8.0