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