gh-122681: merge m_atan2() and c_atan2() helper functions (#122682)

1 files changed, 0 insertions, 37 deletions

diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index 64dfcea..d6d0702 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -535,43 +535,6 @@ m_lgamma(double x)
     return r;
 }
 
-/*
-   wrapper for atan2 that deals directly with special cases before
-   delegating to the platform libm for the remaining cases.  This
-   is necessary to get consistent behaviour across platforms.
-   Windows, FreeBSD and alpha Tru64 are amongst platforms that don't
-   always follow C99.
-*/
-
-static double
-m_atan2(double y, double x)
-{
-    if (isnan(x) || isnan(y))
-        return Py_NAN;
-    if (isinf(y)) {
-        if (isinf(x)) {
-            if (copysign(1., x) == 1.)
-                /* atan2(+-inf, +inf) == +-pi/4 */
-                return copysign(0.25*Py_MATH_PI, y);
-            else
-                /* atan2(+-inf, -inf) == +-pi*3/4 */
-                return copysign(0.75*Py_MATH_PI, y);
-        }
-        /* atan2(+-inf, x) == +-pi/2 for finite x */
-        return copysign(0.5*Py_MATH_PI, y);
-    }
-    if (isinf(x) || y == 0.) {
-        if (copysign(1., x) == 1.)
-            /* atan2(+-y, +inf) = atan2(+-0, +x) = +-0. */
-            return copysign(0., y);
-        else
-            /* atan2(+-y, -inf) = atan2(+-0., -x) = +-pi. */
-            return copysign(Py_MATH_PI, y);
-    }
-    return atan2(y, x);
-}
-
-
 /* IEEE 754-style remainder operation: x - n*y where n*y is the nearest
    multiple of y to x, taking n even in the case of a tie. Assuming an IEEE 754
    binary floating-point format, the result is always exact. */