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

1 files changed, 6 insertions, 6 deletions

diff --git a/win32/include/winapi/winbase.h b/win32/include/winapi/winbase.h
index a5d9b17..4a38006 100644
--- a/win32/include/winapi/winbase.h
+++ b/win32/include/winapi/winbase.h
@@ -968,15 +968,15 @@ extern "C" {
   LONG64 InterlockedExchangeAdd64(LONG64 volatile *Addend,LONG64 Value);
   LONG64 InterlockedCompareExchange64(LONG64 volatile *Destination,LONG64 ExChange,LONG64 Comperand);
 #else
-  LONG InterlockedIncrement(LONG volatile *lpAddend);
-  LONG InterlockedDecrement(LONG volatile *lpAddend);
-  LONG InterlockedExchange(LONG volatile *Target,LONG Value);
+  LONG WINAPI InterlockedIncrement(LONG volatile *lpAddend);
+  LONG WINAPI InterlockedDecrement(LONG volatile *lpAddend);
+  LONG WINAPI InterlockedExchange(LONG volatile *Target,LONG Value);
 
 #define InterlockedExchangePointer(Target,Value) (PVOID)InterlockedExchange((PLONG)(Target),(LONG)(Value))
 
-  LONG InterlockedExchangeAdd(LONG volatile *Addend,LONG Value);
-  LONG InterlockedCompareExchange(LONG volatile *Destination,LONG Exchange,LONG Comperand);
-  LONGLONG InterlockedCompareExchange64(LONGLONG volatile *Destination,LONGLONG Exchange,LONGLONG Comperand);
+  LONG WINAPI InterlockedExchangeAdd(LONG volatile *Addend,LONG Value);
+  LONG WINAPI InterlockedCompareExchange(LONG volatile *Destination,LONG Exchange,LONG Comperand);
+  LONGLONG WINAPI InterlockedCompareExchange64(LONGLONG volatile *Destination,LONGLONG Exchange,LONGLONG Comperand);
 
   __CRT_INLINE LONGLONG InterlockedAnd64 (LONGLONG volatile *Destination,LONGLONG Value) {
     LONGLONG Old;