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- Listing 1
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-
- /*****************************************************/
- /* clearfpu.c */
- /*****************************************************/
-
- void
- ClearFPU(void)
- /*****************************************************/
- /* -- Safely clear exception bits in the FPU. */
- /* -- Ignore all FPU exceptions. */
- /* -- Call this routine following each call to */
- /* GetMessage() or PeekMessage(). */
- /*****************************************************/
- {
- unsigned wControl;
-
- /* Get the current control word. */
- _asm fnstcw wControl;
- _asm wait;
-
- /* Ignore all exceptions. */
- wControl |= 0x007f;
- _asm fnclex;
- _asm fldcw wControl;
- }
-
-
-