Simple program for assessing speed of floating point.
git-svn-id: svn://svn.valgrind.org/vex/trunk@294 8f6e269a-dfd6-0310-a8e1-e2731360e62c
diff --git a/test/fpspeed.c b/test/fpspeed.c
new file mode 100644
index 0000000..83996ea
--- /dev/null
+++ b/test/fpspeed.c
@@ -0,0 +1,29 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+int main ( void )
+{
+ int i, j;
+ double s, r;
+ s = 0.0;
+ double* a1 = malloc(1000 * sizeof(double));
+ double* a2 = malloc(1000 * sizeof(double));
+ for (i = 0; i < 1000; i++) {
+ a1[i] = s;
+ s += 0.3374893482232;
+ a2[i] = s;
+ }
+
+ s = 0.0;
+ r = 0.0;
+ for (j = 0; j < 5000; j++) {
+ for (i = 0; i < 1000; i++) {
+ s += (a1[i] - a2[i]) * (a1[i] + a2[i]) - sqrt(r + 1.0);
+ r += 0.001;
+ }
+ }
+ printf("s = %f, r = %f\n", s, r );
+ return 0;
+}