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HP-UX Reference > C
ccos(3M)HP Integrity Server OnlyHP-UX 11i Version 3: February 2007 |
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NAMEccos(), ccosf(), ccosl(), ccosw(), ccosq() — complex cosine functions SYNOPSIS#include <complex.h> double complex ccos(double complex z); float complex ccosf(float complex z); long double complex ccosl(long double complex z); extended complex ccosw(extended complex z); quad complex ccosq(quad complex z); DESCRIPTIONThese functions are available only for Integrity servers. ccos() returns the complex cosine of z. ccosf() is a float complex version of ccos(); it takes a float complex argument and returns a float complex result. ccosl() is a long double complex version of ccos(); it takes a long double complex argument and returns a long double complex result. ccosw() is an extended complex version of ccos(); it takes an extended complex argument and returns an extended complex result. ccosq() is equivalent to ccosl() on HP-UX systems. USAGETo use these functions, compile with the default -Ae option. To use ccosw() or ccosq(), 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 VALUEccos(conj(z)) = conj(ccos(z)) and ccos is even. ccos(+0+i0) returns 1-i0. ccos(+0+iInf) returns NaN±i0 (where the sign of the imaginary part of the result is unspecified) and raises the invalid floating-point exception. ccos(+0+iNaN) returns NaN±i0 (where the sign of the imaginary part of the result is unspecified). ccos(x+iInf) returns NaN+iNaN and raises the invalid floating-point exception, for finite nonzero x. ccos(x+iNaN) returns NaN+iNaN and optionally raises the invalid floating-point exception, for finite nonzero x. ccos(+Inf+i0) returns +Inf-i0. ccos(+Inf+iy) returns +Inf(cos(y)-isin(y)), for finite nonzero y. ccos(+Inf+iInf) returns ±Inf+iNaN (where the sign of the real part of the result is unspecified) and raises the invalid floating-point exception. ccos(+Inf+iNaN) returns +Inf+iNaN. ccos(NaN+i0) returns NaN±i0 (where the sign of the imaginary part of the result is unspecified). ccos(NaN+iy) returns NaN+iNaN and optionally raises the invalid floating-point exception, for all nonzero numbers y. ccos(NaN+iNaN) returns NaN+iNaN. |
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