Changeset 94505 in vbox

Timestamp:

Apr 6, 2022 8:26:18 PM (3 years ago)

Author:

vboxsync

Message:

iprt/x86.h: Define infinity control bit from 287 and 8087. bugref:9898

File:

• trunk/include/iprt/x86.h (modified) (1 diff)

trunk/include/iprt/x86.h

@@ -3334 +3334 @@
 /** Rounding control: Towards zero. */
 #define X86_FCW_RC_ZERO     UINT16_C(0x0c00)
+/** Infinity control mask - obsolete, 8087 & 287 only. */
+#define X86_FCW_IC_MASK     UINT16_C(0x1000)
+/** Infinity control: Affine - positive infinity is distictly different from
+ *  negative infinity.
+ * @note 8087, 287 only */
+#define X86_FCW_IC_AFFINE   UINT16_C(0x1000)
+/** Infinity control: Projective - positive and negative infinity are the
+ * same (sign ignored).
+ * @note 8087, 287 only */
+#define X86_FCW_IC_PROJECTIVE UINT16_C(0x0000)
 /** Bits which should be zero, apparently. */
 #define X86_FCW_ZERO_MASK   UINT16_C(0xf080)