diff --git a/Modules/cmathmodule.c b/Modules/cmathmodule.cindex bf86a211bc..591442334e 100644--- a/Modules/cmathmodule.c+++ b/Modules/cmathmodule.c@@ -185,15 +185,8 @@ cmath_acos_impl(PyObject *module, Py_complex z)     if (fabs(z.real) > CM_LARGE_DOUBLE || fabs(z.imag) > CM_LARGE_DOUBLE) {         /* avoid unnecessary overflow for large arguments */         r.real = atan2(fabs(z.imag), z.real);-        /* split into cases to make sure that the branch cut has the-           correct continuity on systems with unsigned zeros */-        if (z.real < 0.) {-            r.imag = -copysign(log(hypot(z.real/2., z.imag/2.)) +-                               M_LN2*2., z.imag);-        } else {-            r.imag = copysign(log(hypot(z.real/2., z.imag/2.)) +-                              M_LN2*2., -z.imag);-        }+        r.imag = -copysign(log(hypot(z.real/2., z.imag/2.)) ++                           M_LN2*2., z.imag);     } else {         s1.real = 1.-z.real;         s1.imag = -z.imag;@@ -386,11 +379,7 @@ cmath_atanh_impl(PyObject *module, Py_complex z)         */         h = hypot(z.real/2., z.imag/2.);  /* safe from overflow */         r.real = z.real/4./h/h;-        /* the two negations in the next line cancel each other out-           except when working with unsigned zeros: they're there to-           ensure that the branch cut has the correct continuity on-           systems that don't support signed zeros */-        r.imag = -copysign(Py_MATH_PI/2., -z.imag);+        r.imag = copysign(Py_MATH_PI/2., z.imag);         errno = 0;     } else if (z.real == 1. && ay < CM_SQRT_DBL_MIN) {         /* C99 standard says:  atanh(1+/-0.) should be inf +/- 0i */