cpow(3M)

NAME

cpow(), cpowf(), cpowl(), cpoww(), cpowq() — complex power functions

SYNOPSIS

#include <complex.h>

double complex cpow(double complex x, double complex y);

float complex cpowf(float complex x, float complex y);

long double complex cpowl(long double complex x, long double complex y);

extended complex cpoww(extended complex x, extended complex y);

quad complex cpowq(quad complex x, quad complex y);

DESCRIPTION

These functions are available only for Integrity servers.

cpow() returns x^y. There is a branch cut for the first parameter along the negative real axis.

cpowf() is a float complex version of cpow(); it takes float complex arguments and returns a float complex result.

cpowl() is a long double complex version of cpow(); it takes long double complex arguments and returns a long double complex result.

cpoww() is an extended complex version of cpow(); it takes a extended complex arguments and returns an extended complex result.

cpowq() is equivalent to cpowl() on HP-UX systems.

USAGE

To use these functions, compile with the default -Ae option. To use cpoww() or cpowq(), compile with the -fpwidetypes option. Make sure your program includes <complex.h>. Link in the math library by specifying -lm on the compiler or linker command line.

RETURN VALUE

cpow(x,y) returns the value calculated by cexp(y*clog(x)) and raises the exceptions from that calculation, for non-zero y. (The intermediate calculations may be done to greater precision and range.)

cpow(x,±0±i0) returns 1+i0.

ERRORS

No errors are defined.

STANDARDS CONFORMANCE

cpow(), cpowf(), cpowl() : ISO/IEC C99 (including Annex G, ``IEC 60559-compatible complex arithmetic'')

cpow(3M)

Technical documentation

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