Method: CCMath.atan

Defined in:
ext/ccmath/ccmath.c

.atan(z) ⇒ Object 



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# File 'ext/ccmath/ccmath.c', line 323

static VALUE
ccmath_atan(VALUE obj, VALUE z)
{
    EXTRACT_DBLS(z);

    if (z_imag == 0.0) return DBLS2COMP(atan(z_real), 0.0);

    VALUE s = ccmath_atanh(obj, DBLS2COMP(-z_imag, z_real));
    EXTRACT_DBLS(s);
    return DBLS2COMP(s_imag, -s_real);
}