[libc-commits] [libc] [llvm] [libc][math] Add float-only implementation for sinf / cosf. (PR #161680)

[Michael Jones via libc-commits]

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@@ -0,0 +1,47 @@
+//===-- Exhaustive test for sinf - float-only -----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test float-only fast math implementation for sinf.
+#define LIBC_MATH (LIBC_MATH_FAST | LIBC_MATH_INTERMEDIATE_COMP_IN_FLOAT)
+
+#include "exhaustive_test.h"
+#include "src/__support/math/sincosf_float_eval.h"
+#include "utils/MPFRWrapper/MPFRUtils.h"
+
+namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
+
+float sinf_fast(float x) {
+  return LIBC_NAMESPACE::math::sincosf_float_eval::sincosf_eval<
+      /*IS_SIN*/ true>(x);
+}
+
+using LlvmLibcSinfExhaustiveTest =
+    LlvmLibcUnaryOpExhaustiveMathTest<float, mpfr::Operation::Sin, sinf_fast,
+                                      3>;
+
+// Range: [0, Inf];
+static constexpr uint32_t POS_START = 0x0000'0000U;
+static constexpr uint32_t POS_STOP = 0x7f80'0000U;
+
+TEST_F(LlvmLibcSinfExhaustiveTest, PostiveRange) {
+  std::cout << "-- Testing for FE_TONEAREST in range [0x" << std::hex
+            << POS_START << ", 0x" << POS_STOP << ") --" << std::dec
+            << std::endl;
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michaelrj-google wrote:

at some point we should really get a better setup for the exhaustive tests than using `cout`.

https://github.com/llvm/llvm-project/pull/161680