view src/mingw-w64-1-float-h.patch @ 5947:09d3533acacf

* src/build-cmake.mk, src/cmake.mk: update v3.21.4
author John Donoghue <john.donoghue@ieee.org>
date Thu, 11 Nov 2021 09:49:11 -0500
parents c366dab2350c
children
line wrap: on
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This file is part of MXE. See LICENSE.md for licensing information.

Contains ad hoc patches for cross building.

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mark Brand <mabrand@mabrand.nl>
Date: Sun, 29 Mar 2015 14:36:38 +0200
Subject: [PATCH 1/1] workaround for -isystem flag messing up include order

https://bugzilla.redhat.com/show_bug.cgi?id=843436

diff --git a/mingw-w64-headers/crt/float.h b/mingw-w64-headers/crt/float.h
index 1111111..2222222 100644
--- a/mingw-w64-headers/crt/float.h
+++ b/mingw-w64-headers/crt/float.h
@@ -114,6 +114,15 @@
 	#define DBL_MAX_10_EXP	__DBL_MAX_10_EXP__
 	#define LDBL_MAX_10_EXP	__LDBL_MAX_10_EXP__
 
+    /* The difference between 1 and the least value greater than 1 that is
+    representable in the given floating point type, b**1-p.  */
+    #undef FLT_EPSILON
+    #undef DBL_EPSILON
+    #undef LDBL_EPSILON
+    #define FLT_EPSILON __FLT_EPSILON__
+    #define DBL_EPSILON __DBL_EPSILON__
+    #define LDBL_EPSILON    __LDBL_EPSILON__
+
 	/* Addition rounds to 0: zero, 1: nearest, 2: +inf, 3: -inf, -1: unknown.  */
 	/* ??? This is supposed to change with calls to fesetround in <fenv.h>.  */
 	#undef FLT_ROUNDS