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diff -Naur drystone-2.1/dhry.h drystone-patched/dhry.h
--- dhry.h 2014-08-30 16:32:37.000000000 +0200
+++ dhry.h 2014-08-30 16:37:44.933675426 +0200
@@ -385,6 +385,8 @@
#include <stdio.h>
/* for strcpy, strcmp */
+#include <unistd.h>
+ /* for sysconf */
#define Null 0
/* Value of a Null pointer */
diff -Naur drystone-2.1/dhry_1.c drystone-patched/dhry_1.c
--- dhry_1.c 2014-08-30 16:32:37.000000000 +0200
+++ dhry_1.c 2014-08-30 16:44:20.484050144 +0200
@@ -262,6 +262,8 @@
/ (float) Number_Of_Runs;
Dhrystones_Per_Second = (float) Number_Of_Runs / (float) User_Time;
#else
+
+ int HZ = sysconf(_SC_CLK_TCK);
Microseconds = (float) User_Time * Mic_secs_Per_Second
/ ((float) HZ * ((float) Number_Of_Runs));
Dhrystones_Per_Second = ((float) HZ * (float) Number_Of_Runs)
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