From ed45e192159d181718f1e21d7f2794fac444d67e Mon Sep 17 00:00:00 2001
From: nyw <skdud@ajou.ac.kr>
Date: Wed, 19 Aug 2020 03:17:26 +0900
Subject: [PATCH] Add div test code
---
div_perf.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
create mode 100644 div_perf.c
diff --git a/div_perf.c b/div_perf.c
new file mode 100644
index 0000000..7dfc664
--- /dev/null
+++ b/div_perf.c
@@ -0,0 +1,59 @@
+#define TEST_NUM 10000000
+
+#include <stdio.h>
+
+typedef int fx_s2308;
+typedef long fixed32;
+
+#define FX_TO_DOUBLE(a) ((double) (a/(256.0)))
+#define DOUBLE_TO_FX(a) (((int)(a*(256.0))))
+
+#define FX_DIV(a,b) DOUBLE_TO_FX(FX_TO_DOUBLE(a)/FX_TO_DOUBLE(b))
+#define fx_s2308_l_div1(a,b) (int)((long long)(a)/(b))
+#define fx_s2308_l_div2(a,b) (int)((a<<8)/(b))
+
+long long div_sum_double_test()
+{
+ long long sum = 0;
+
+ for(int i=1;i<TEST_NUM;i++)
+ {
+ sum += FX_DIV(DOUBLE_TO_FX(i), DOUBLE_TO_FX(i));
+ }
+
+ return sum;
+}
+
+long long div1_sum_longlong_test()
+{
+ long long sum = 0;
+
+ for(int i=1;i<TEST_NUM;i++)
+ {
+ sum += fx_s2308_l_div1(DOUBLE_TO_FX(i), DOUBLE_TO_FX(i));
+ }
+
+ return sum;
+}
+
+long long div2_sum_longlong_test()
+{
+ long long sum = 0;
+
+ for(int i=1;i<TEST_NUM;i++)
+ {
+ sum += fx_s2308_l_div2(DOUBLE_TO_FX(i), DOUBLE_TO_FX(i));
+ }
+
+ return sum;
+}
+
+int main()
+{
+ printf("double div - sum : %lld\n", div_sum_double_test());
+ printf("long long div1 - sum : %lld\n", div1_sum_longlong_test());
+ printf("long long div2 - sum : %lld\n", div2_sum_longlong_test());
+
+ return 0;
+}
+
--
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