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[git.git] / git-compat-util.h

diff --git a/git-compat-util.h b/git-compat-util.h
index 9609eaa77f1dad589700bda222e0a81ad4f4d1ee..9f941e42b16d927f738b4911b41344dd2f3ed0da 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -26,6 +26,7 @@
 #endif
 
 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
+#define bitsizeof(x)  (CHAR_BIT * sizeof(x))
 
 #ifdef __GNUC__
 #define TYPEOF(x) (__typeof__(x))
@@ -33,9 +34,11 @@
 #define TYPEOF(x)
 #endif
 
-#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
+#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits))))
 #define HAS_MULTI_BITS(i)  ((i) & ((i) - 1))  /* checks if an integer has more than 1 bit set */
 
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+
 /* Approximation of the length of the decimal representation of this type. */
 #define decimal_length(x)      ((int)(sizeof(x) * 2.56 + 0.5) + 1)
 
@@ -52,7 +55,7 @@
 # else
 # define _XOPEN_SOURCE 500
 # endif
-#elif !defined(__APPLE__) && !defined(__FreeBSD__)  && !defined(__USLC__) && !defined(_M_UNIX)
+#elif !defined(__APPLE__) && !defined(__FreeBSD__)  && !defined(__USLC__) && !defined(_M_UNIX) && !defined(sgi)
 #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
 #ifndef __sun__
 #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
@@ -62,6 +65,7 @@
 #define _GNU_SOURCE 1
 #define _BSD_SOURCE 1
 #define _NETBSD_SOURCE 1
+#define _SGI_SOURCE 1
 
 #include <unistd.h>
 #include <stdio.h>