1 files changed, 96 insertions, 0 deletions
diff --git a/Client/ThirdParty/libfixmath/fixtest/main.c b/Client/ThirdParty/libfixmath/fixtest/main.c
new file mode 100644
index 0000000..822f290
--- /dev/null
+++ b/Client/ThirdParty/libfixmath/fixtest/main.c
@@ -0,0 +1,96 @@
+#include "hiclock.h"
+#include <inttypes.h>
+#include <libfixmath/fixmath.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+#define EXP
+//#define ATAN
+//#define SIN
+//#define SQRT
+
+#ifdef EXP
+#define fix_func     fix16_exp
+#define fix_func_str "fix16_exp"
+#define flt_func     expf
+#define flt_func_str "expf"
+#endif
+
+#ifdef ATAN
+#define fix_func     fix16_atan
+#define fix_func_str "fix16_atan"
+#define flt_func     atanf
+#define flt_func_str "atanf"
+#endif
+
+#ifdef SIN
+#define fix_func     fix16_sin
+#define fix_func_str "fix16_sin"
+#define flt_func     sinf
+#define flt_func_str "sinf"
+#endif
+
+#ifdef SQRT
+#define fix_func     fix16_sqrt
+#define fix_func_str "fix16_sqrt"
+#define flt_func     sqrtf
+#define flt_func_str "sqrtf"
+#endif
+
+int main(int argc, char **argv)
+{
+	printf("libfixmath test tool\n");
+
+	hiclock_init();
+
+	uintptr_t args = (1 << 8);
+	uintptr_t iter = (1 << 8);
+	uintptr_t pass = (1 << 8);
+
+	uintptr_t i;
+	srand(time(NULL));
+
+	hiclock_t fix_duration = 0;
+	hiclock_t flt_duration = 0;
+	fix16_t   fix_error	= 0;
+
+	uintptr_t k;
+	for (k = 0; k < pass; k++)
+	{
+		fix16_t fix_args[args];
+		for (i = 0; i < args; i++) fix_args[i] = (rand() ^ (rand() << 16));
+		fix16_t   fix_result[args];
+		hiclock_t fix_start = hiclock();
+		for (i = 0; i < iter; i++)
+		{
+			uintptr_t j;
+			for (j = 0; j < args; j++) fix_result[j] = fix_func(fix_args[j]);
+		}
+		hiclock_t fix_end = hiclock();
+
+		float flt_args[args];
+		for (i = 0; i < args; i++) flt_args[i] = fix16_to_float(fix_args[i]);
+		float flt_result[args];
+		hiclock_t flt_start = hiclock();
+		for (i = 0; i < iter; i++)
+		{
+			uintptr_t j;
+			for (j = 0; j < args; j++) flt_result[j] = flt_func(flt_args[j]);
+		}
+		hiclock_t flt_end = hiclock();
+
+		for (i = 0; i < args; i++)
+			fix_error += abs(fix16_from_float(flt_result[i]) - fix_result[i]);
+		flt_duration += (flt_end - flt_start);
+		fix_duration += (fix_end - fix_start);
+	}
+
+	printf("%16s: %08" PRIuHICLOCK " @ %" PRIu32 "Hz\n", flt_func_str, flt_duration, HICLOCKS_PER_SEC);
+	printf("%16s: %08" PRIuHICLOCK " @ %" PRIu32 "Hz\n", fix_func_str, fix_duration, HICLOCKS_PER_SEC);
+	printf("      Difference: %08" PRIiHICLOCK " (% 3.2f%%)\n", (flt_duration - fix_duration), ((fix_duration * 100.0) / flt_duration));
+	printf("           Error: %f%%\n", ((fix16_to_dbl(fix_error) * 100.0) / (args * pass)));
+
+	return EXIT_SUCCESS;
+}