1 files changed, 34 insertions, 0 deletions
diff --git a/lib/std/special/compiler_rt/divsf3_test.zig b/lib/std/special/compiler_rt/divsf3_test.zig
new file mode 100644
index 0000000000..188842af58
--- /dev/null
+++ b/lib/std/special/compiler_rt/divsf3_test.zig
@@ -0,0 +1,34 @@
+// Ported from:
+//
+// https://github.com/llvm/llvm-project/commit/d674d96bc56c0f377879d01c9d8dfdaaa7859cdb/compiler-rt/test/builtins/Unit/divsf3_test.c
+
+const __divsf3 = @import("divsf3.zig").__divsf3;
+const testing = @import("std").testing;
+
+fn compareResultF(result: f32, expected: u32) bool {
+    const rep = @bitCast(u32, result);
+
+    if (rep == expected) {
+        return true;
+    }
+    // test other possible NaN representation(signal NaN)
+    else if (expected == 0x7fc00000) {
+        if ((rep & 0x7f800000) == 0x7f800000 and
+            (rep & 0x7fffff) > 0)
+        {
+            return true;
+        }
+    }
+    return false;
+}
+
+fn test__divsf3(a: f32, b: f32, expected: u32) void {
+    const x = __divsf3(a, b);
+    const ret = compareResultF(x, expected);
+    testing.expect(ret == true);
+}
+
+test "divsf3" {
+    test__divsf3(1.0, 3.0, 0x3EAAAAAB);
+    test__divsf3(2.3509887e-38, 2.0, 0x00800000);
+}