ccosh(3M)

DESCRIPTION

These functions are available only for IA-64.

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.

USAGE

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

RETURN VALUES

ccosh(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 NaN1i0 (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.

ERRORS

No errors are defined.

SEE ALSO

cosh(3M), cacosh(3M), complex(5).

STANDARDS CONFORMANCE

ccosh(), ccoshf(): ISO/IEC C99 (including Annex G, IEC 60559-compatible complex arithmetic)