Changeset 3598 for trunk/src/opengl/mesa/mmath.c

Timestamp:

May 23, 2000, 10:41:28 PM (25 years ago)

Author:

jeroen

Message:

* empty log message *

File:

• trunk/src/opengl/mesa/mmath.c (modified) (8 diffs)

trunk/src/opengl/mesa/mmath.c

@@ -1 @@
-/* $Id: mmath.c,v 1.1 2000-02-29 00:50:07 sandervl Exp $ */
+/* $Id: mmath.c,v 1.2 2000-05-23 20:40:41 jeroen Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.1
+ * Version:  3.3
  *
  * Copyright (C) 1999  Brian Paul   All Rights Reserved.
@@ -24 +24 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-/* $XFree86: xc/lib/GL/mesa/src/mmath.c,v 1.2 1999/04/04 00:20:28 dawes Exp $ */
-
-
-
 
 
@@ -33 +29 @@
 #include "all.h"
 #else
-#ifndef XFree86Server
-#include <math.h>
-#else
-#include "GL/xf86glx.h"
-#endif
-#include "gl.h"
+#include "glheader.h"
 #include "mmath.h"
 #endif
@@ -44 +35 @@
 
 static int in_fast_math;
-
 
 /*
@@ -57 +47 @@
  * SPARC floating point format is as follows:
  *
- * BIT 31       30      23      22      0
- *     sign     exponent        mantissa
+ * BIT 31       30      23      22      0
+ *     sign     exponent        mantissa
  */
 static short sqrttab[0x100];    /* declare table of square roots */
@@ -100 +90 @@
    }
 #else
-   (void) sqrttab;  /* silence compiler warning - unused var */
-#endif
+   (void) sqrttab;  /* silence compiler warnings */
+#endif /*FAST_MATH*/
 }
 
@@ -152 +142 @@
  * Initialize tables, etc for fast math functions.
  */
-void gl_init_math(void)
+void _mesa_init_math(void)
 {
    static GLboolean initialized = GL_FALSE;
@@ -162 +152 @@
       initialized = GL_TRUE;
       in_fast_math = 0;
+
+#if defined(_FPU_GETCW) && defined(_FPU_SETCW)
+      {
+         const char *debug = getenv("MESA_DEBUG");
+         if (debug && strcmp(debug, "FP")==0) {
+            /* die on FP exceptions */
+            fpu_control_t mask;
+            _FPU_GETCW(mask);
+            mask &= ~(_FPU_MASK_IM | _FPU_MASK_DM | _FPU_MASK_ZM
+                      | _FPU_MASK_OM | _FPU_MASK_UM);
+            _FPU_SETCW(mask);
+         }
+      }
+#endif
    }
 }