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Diffstat (limited to 'lib/std/special/compiler_rt/fixunssfdi_test.zig')
-rw-r--r--lib/std/special/compiler_rt/fixunssfdi_test.zig35
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/std/special/compiler_rt/fixunssfdi_test.zig b/lib/std/special/compiler_rt/fixunssfdi_test.zig
new file mode 100644
index 0000000000..e2089822d2
--- /dev/null
+++ b/lib/std/special/compiler_rt/fixunssfdi_test.zig
@@ -0,0 +1,35 @@
+const __fixunssfdi = @import("fixunssfdi.zig").__fixunssfdi;
+const testing = @import("std").testing;
+
+fn test__fixunssfdi(a: f32, expected: u64) void {
+ const x = __fixunssfdi(a);
+ testing.expect(x == expected);
+}
+
+test "fixunssfdi" {
+ test__fixunssfdi(0.0, 0);
+
+ test__fixunssfdi(0.5, 0);
+ test__fixunssfdi(0.99, 0);
+ test__fixunssfdi(1.0, 1);
+ test__fixunssfdi(1.5, 1);
+ test__fixunssfdi(1.99, 1);
+ test__fixunssfdi(2.0, 2);
+ test__fixunssfdi(2.01, 2);
+ test__fixunssfdi(-0.5, 0);
+ test__fixunssfdi(-0.99, 0);
+
+ test__fixunssfdi(-1.0, 0);
+ test__fixunssfdi(-1.5, 0);
+ test__fixunssfdi(-1.99, 0);
+ test__fixunssfdi(-2.0, 0);
+ test__fixunssfdi(-2.01, 0);
+
+ test__fixunssfdi(0x1.FFFFFEp+63, 0xFFFFFF0000000000);
+ test__fixunssfdi(0x1.000000p+63, 0x8000000000000000);
+ test__fixunssfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000);
+ test__fixunssfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000);
+
+ test__fixunssfdi(-0x1.FFFFFEp+62, 0x0000000000000000);
+ test__fixunssfdi(-0x1.FFFFFCp+62, 0x0000000000000000);
+}