Method: CCMath.cosh

Defined in:
ext/ccmath/ccmath.c

.cosh(z) ⇒ Object 



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# File 'ext/ccmath/ccmath.c', line 228

static VALUE
ccmath_cosh(VALUE obj, VALUE z)
{
    EXTRACT_DBLS(z);
    if (z_real == 0.0) return DBLS2COMP(cos(z_imag), 0.0);
    if (z_imag == 0.0) return DBLS2COMP(cosh(z_real), 0.0);
    return DBLS2COMP(cosh(z_real) * cos(z_imag), sinh(z_real) * sin(z_imag));
}