From 194a9526d8ee6abbbe58ef48520ec87a7e83f327 Mon Sep 17 00:00:00 2001 From: Victor Stinner Date: Wed, 13 Oct 2021 23:27:50 +0200 Subject: bpo-45440: Require math.h isinf() to build (GH-28894) Building Python now requires a C99 header file providing isinf(), isnan() and isfinite() functions. Remove the Py_FORCE_DOUBLE() macro. It was used by the Py_IS_INFINITY() macro. Changes: * Remove Py_IS_NAN(), Py_IS_INFINITY() and Py_IS_FINITE() in PC/pyconfig.h. * Remove the _Py_force_double() function. * configure no longer checks if math.h defines isinf(), isnan() and isfinite(). --- Python/pymath.c | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'Python/pymath.c') diff --git a/Python/pymath.c b/Python/pymath.c index d3c52a0965..b2681f2acc 100644 --- a/Python/pymath.c +++ b/Python/pymath.c @@ -1,18 +1,5 @@ #include "Python.h" -#ifdef X87_DOUBLE_ROUNDING -/* On x86 platforms using an x87 FPU, this function is called from the - Py_FORCE_DOUBLE macro (defined in pymath.h) to force a floating-point - number out of an 80-bit x87 FPU register and into a 64-bit memory location, - thus rounding from extended precision to double precision. */ -double _Py_force_double(double x) -{ - volatile double y; - y = x; - return y; -} -#endif - #ifdef HAVE_GCC_ASM_FOR_X87 // Inline assembly for getting and setting the 387 FPU control word on -- cgit v1.2.1