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HP-UX Reference > C
cis(3M)Itanium(R)-base System OnlyHP-UX 11i Version 2: December 2007 Update |
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NAMEcis(), cisf(), cisl(), cisw(), cisq() — complex value with unit magnitude and given angle (specified in radians) SYNOPSIS#include <complex.h> double complex cis(double x); float complex cisf(float x); long double complex cisl(long double x); extended complex cisw(extended x); quad complex cisq(quad x); DESCRIPTIONThese functions are available only for Itanium-based systems. cis() returns the complex value whose real and imaginary parts are the cosine and sine of x, respectively. cis(x) is equivalent to cexp(ix). cisf() is a float complex version of cis(); it takes a float argument and returns a float complex result. cisl() is a long double complex version of cis(); it takes a long double argument and returns a long double complex result. cisw() is an extended complex version of cis(); it takes an extended argument and returns an extended complex result. cisq() is equivalent to cisl() on HP-UX systems. USAGETo use these functions, compile with the default -Ae option. To use cisw() or cisq(), 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. |
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