From 73faaea227a53e365dd75f1dba7a5071c7b5e541 Mon Sep 17 00:00:00 2001
From: grischka <grischka>
Date: Wed, 28 Aug 2013 22:55:05 +0200
Subject: i386-gen: preserve fp control word in gen_cvt_ftoi

- Use runtime function for conversion
- Also initialize fp with tcc -run on windows

This fixes a bug where
  double x = 1.0;
  double y = 1.0000000000000001;
  double z = x < y ? 0 : sqrt (x*x - y*y);
caused a bad sqrt because rounding precision for the x < y comparison
was different to the one used within the sqrt function.

This also fixes a bug where
  printf("%d, %d", (int)pow(10, 2), (int)pow(10, 2));
would print
  100, 99

Unrelated:
  win32: document relative include & lib lookup
  win32: normalize_slashes: do not mirror silly gcc behavior
  This reverts part of commit 8a81f9e1036637e21a47e14fb56bf64133546890
  winapi: add missing WINAPI decl. for some functions
---
 win32/lib/wincrt1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'win32/lib/wincrt1.c')

diff --git a/win32/lib/wincrt1.c b/win32/lib/wincrt1.c
index 77e74b8..663fd33 100644
--- a/win32/lib/wincrt1.c
+++ b/win32/lib/wincrt1.c
@@ -59,6 +59,6 @@ int _runwinmain(int argc, char **argv)
         szCmd = "";
     else if (szCmd > p && szCmd[-1] == '\"')
         --szCmd;
+    _controlfp(0x10000, 0x30000);
     return WinMain(GetModuleHandle(NULL), NULL, szCmd, SW_SHOWDEFAULT);
 }
-
-- 
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