1 files changed, 101 insertions, 0 deletions
diff --git a/lib/std/special/compiler_rt/comparesf2_test.zig b/lib/std/special/compiler_rt/comparesf2_test.zig
new file mode 100644
index 0000000000..d736988bfb
--- /dev/null
+++ b/lib/std/special/compiler_rt/comparesf2_test.zig
@@ -0,0 +1,101 @@
+// Ported from:
+//
+// https://github.com/llvm/llvm-project/commit/d674d96bc56c0f377879d01c9d8dfdaaa7859cdb/compiler-rt/test/builtins/Unit/comparesf2_test.c
+
+const std = @import("std");
+const builtin = @import("builtin");
+const is_test = builtin.is_test;
+
+const comparesf2 = @import("comparesf2.zig");
+
+const TestVector = struct {
+    a: f32,
+    b: f32,
+    eqReference: c_int,
+    geReference: c_int,
+    gtReference: c_int,
+    leReference: c_int,
+    ltReference: c_int,
+    neReference: c_int,
+    unReference: c_int,
+};
+
+fn test__cmpsf2(vector: TestVector) bool {
+    if (comparesf2.__eqsf2(vector.a, vector.b) != vector.eqReference) {
+        return false;
+    }
+    if (comparesf2.__gesf2(vector.a, vector.b) != vector.geReference) {
+        return false;
+    }
+    if (comparesf2.__gtsf2(vector.a, vector.b) != vector.gtReference) {
+        return false;
+    }
+    if (comparesf2.__lesf2(vector.a, vector.b) != vector.leReference) {
+        return false;
+    }
+    if (comparesf2.__ltsf2(vector.a, vector.b) != vector.ltReference) {
+        return false;
+    }
+    if (comparesf2.__nesf2(vector.a, vector.b) != vector.neReference) {
+        return false;
+    }
+    if (comparesf2.__unordsf2(vector.a, vector.b) != vector.unReference) {
+        return false;
+    }
+    return true;
+}
+
+const arguments = [_]f32{
+    std.math.nan(f32),
+    -std.math.inf(f32),
+    -0x1.fffffep127,
+    -0x1.000002p0 - 0x1.000000p0,
+    -0x1.fffffep-1,
+    -0x1.000000p-126,
+    -0x0.fffffep-126,
+    -0x0.000002p-126,
+    -0.0,
+    0.0,
+    0x0.000002p-126,
+    0x0.fffffep-126,
+    0x1.000000p-126,
+    0x1.fffffep-1,
+    0x1.000000p0,
+    0x1.000002p0,
+    0x1.fffffep127,
+    std.math.inf(f32),
+};
+
+fn generateVector(comptime a: f32, comptime b: f32) TestVector {
+    const leResult = if (a < b) -1 else if (a == b) 0 else 1;
+    const geResult = if (a > b) 1 else if (a == b) 0 else -1;
+    const unResult = if (a != a or b != b) 1 else 0;
+    return TestVector{
+        .a = a,
+        .b = b,
+        .eqReference = leResult,
+        .geReference = geResult,
+        .gtReference = geResult,
+        .leReference = leResult,
+        .ltReference = leResult,
+        .neReference = leResult,
+        .unReference = unResult,
+    };
+}
+
+const test_vectors = init: {
+    @setEvalBranchQuota(10000);
+    var vectors: [arguments.len * arguments.len]TestVector = undefined;
+    for (arguments[0..]) |arg_i, i| {
+        for (arguments[0..]) |arg_j, j| {
+            vectors[(i * arguments.len) + j] = generateVector(arg_i, arg_j);
+        }
+    }
+    break :init vectors;
+};
+
+test "compare f32" {
+    for (test_vectors) |vector, i| {
+        std.testing.expect(test__cmpsf2(vector));
+    }
+}