1 files changed, 46 insertions, 0 deletions
diff --git a/src/Specific/NISTP256/AMD64/test/feadd_test.c b/src/Specific/NISTP256/AMD64/test/feadd_test.c
new file mode 100644
index 000000000..3cdd1fd60
--- /dev/null
+++ b/src/Specific/NISTP256/AMD64/test/feadd_test.c
@@ -0,0 +1,46 @@
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include "feadd.h"
+
+static int check(uint64_t out[4], uint64_t ref[4]) {
+  return out[0] == ref[0] && out[1] == ref[1] && out[2] == ref[2] && out[3] == ref[3];
+}
+
+int main() {
+  {
+    uint64_t out[4] = {0};
+    uint64_t in1[4] = {0, 0, 0, 1};
+    uint64_t in2[4] = {0, 0, 0, 1};
+    uint64_t ref[4] = {0, 0, 0, 2};
+    feadd(out, in1[0], in1[1], in1[2], in1[3], in2[0], in2[1], in2[2], in2[3]);
+    if (!check(out, ref)) return 1;
+  }
+  {
+    uint64_t out[4] = {0};
+    uint64_t in1[4] = {0, 0, 0, 0};
+    uint64_t in2[4] = {0, 0, 0, 0};
+    uint64_t ref[4] = {0, 0, 0, 0};
+    feadd(out, in1[0], in1[1], in1[2], in1[3], in2[0], in2[1], in2[2], in2[3]);
+    if (!check(out, ref)) return 2;
+  }
+  {
+    uint64_t out[4] = {0};
+    uint64_t in1[4] = {0xffffffff00000001, 0x0000000000000000, 0x00000000ffffffff, 0xfffffffffffffffe}; // p256-1
+    uint64_t in2[4] = {0, 0, 0, 1};
+    uint64_t ref[4] = {0, 0, 0, 0};
+    feadd(out, in1[0], in1[1], in1[2], in1[3], in2[0], in2[1], in2[2], in2[3]);
+    if (!check(out, ref)) return 3;
+  }
+  {
+    uint64_t out[4] = {0};
+    uint64_t in1[4] = {0xffffffff00000001, 0x0000000000000000, 0x00000000ffffffff, 0xfffffffffffffffe}; // p256-1
+    uint64_t in2[4] = {0, 0, 0, 7};
+    uint64_t ref[4] = {0, 0, 0, 6};
+    feadd(out, in1[0], in1[1], in1[2], in1[3], in2[0], in2[1], in2[2], in2[3]);
+    if (!check(out, ref)) return 4;
+  }
+  
+  //printf("0x%016" PRIx64 " 0x%016" PRIx64 " 0x%016" PRIx64 " 0x%016" PRIx64 "\n", out[0], out[1], out[2], out[3]);
+  //printf("((((((0x%016" PRIx64 "<<64)+ 0x%016" PRIx64 ")<<64)+ 0x%016" PRIx64 ")<<64)+ 0x%016" PRIx64 ")\n", out[0], out[1], out[2], out[3]);
+}