X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=xdiff%2Fxmacros.h;h=e2cd2023b31e794bc0c5ba28f64ae4ce4e128184;hb=20f50f1670c18173d74a34527b0c538c3fbbfde3;hp=4c2fde80c143b3aaf086dc36c1a050851f83feaa;hpb=12d81ce59846e17676c5534257ca2f1783829d63;p=git.git

diff --git a/xdiff/xmacros.h b/xdiff/xmacros.h
index 4c2fde80c..e2cd2023b 100644
--- a/xdiff/xmacros.h
+++ b/xdiff/xmacros.h
@@ -24,14 +24,15 @@
 #define XMACROS_H
 
 
-#define GR_PRIME 0x9e370001UL
 
 
 #define XDL_MIN(a, b) ((a) < (b) ? (a): (b))
 #define XDL_MAX(a, b) ((a) > (b) ? (a): (b))
 #define XDL_ABS(v) ((v) >= 0 ? (v): -(v))
 #define XDL_ISDIGIT(c) ((c) >= '0' && (c) <= '9')
-#define XDL_HASHLONG(v, b) (((unsigned long)(v) * GR_PRIME) >> ((CHAR_BIT * sizeof(unsigned long)) - (b)))
+#define XDL_ADDBITS(v,b)	((v) + ((v) >> (b)))
+#define XDL_MASKBITS(b)		((1UL << (b)) - 1)
+#define XDL_HASHLONG(v,b)	(XDL_ADDBITS((unsigned long)(v), b) & XDL_MASKBITS(b))
 #define XDL_PTRFREE(p) do { if (p) { xdl_free(p); (p) = NULL; } } while (0)
 #define XDL_LE32_PUT(p, v) \
 do { \