Changeset 52290 in vbox for trunk/include/iprt

Timestamp:

Aug 6, 2014 10:14:47 AM (11 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

95402

Message:

RTBigNum: Two assembly optimizations related to RTBigNumModExp. Use 64-bit element type on 64-bit hosts (instead of 32-bit everywhere). Fixed some bugs in the bit operations, which apparently didn't affect x86 or AMD64.

File:

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

trunk/include/iprt/bignum.h

@@ -38 +38 @@
 
 /** The big integer number element type. */
+#if ARCH_BITS == 64
+typedef uint64_t RTBIGNUMELEMENT;
+#else
 typedef uint32_t RTBIGNUMELEMENT;
+#endif
 /** The size (in bytes) of one array element. */
-#define RTBIGNUM_ELEMENT_SIZE           4
+#if ARCH_BITS == 64
+# define RTBIGNUM_ELEMENT_SIZE          8
+#else
+# define RTBIGNUM_ELEMENT_SIZE          4
+#endif
 /** The number of bits in one array element. */
 #define RTBIGNUM_ELEMENT_BITS           (RTBIGNUM_ELEMENT_SIZE * 8)
 /** Returns the bitmask corrsponding to given bit number. */
-#define RTBIGNUM_ELEMENT_BIT(iBit)      RT_BIT_32(iBit)
+#if ARCH_BITS == 64
+# define RTBIGNUM_ELEMENT_BIT(iBit)     RT_BIT_64(iBit)
+#else
+# define RTBIGNUM_ELEMENT_BIT(iBit)     RT_BIT_32(iBit)
+#endif
 
 /**