libc/test/src/math/asinhf_test.cpp

   1 //===-- Unittests for asinhf ----------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "hdr/math_macros.h"
  10 #include "src/__support/FPUtil/FPBits.h"
  11 #include "src/errno/libc_errno.h"
  12 #include "src/math/asinhf.h"
  13 #include "test/UnitTest/FPMatcher.h"
  14 #include "test/UnitTest/Test.h"
  15 #include "utils/MPFRWrapper/MPFRUtils.h"
  16
  17 #include <stdint.h>
  18
  19 using LlvmLibcAsinhfTest = LIBC_NAMESPACE::testing::FPTest<float>;
  20
  21 namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
  22
  23 TEST_F(LlvmLibcAsinhfTest, SpecialNumbers) {
  24   LIBC_NAMESPACE::libc_errno = 0;
  25
  26   EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asinhf(aNaN));
  27   EXPECT_MATH_ERRNO(0);
  28
  29   EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::asinhf(0.0f));
  30   EXPECT_MATH_ERRNO(0);
  31
  32   EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::asinhf(-0.0f));
  33   EXPECT_MATH_ERRNO(0);
  34
  35   EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::asinhf(inf));
  36   EXPECT_MATH_ERRNO(0);
  37
  38   EXPECT_FP_EQ_ALL_ROUNDING(neg_inf, LIBC_NAMESPACE::asinhf(neg_inf));
  39   EXPECT_MATH_ERRNO(0);
  40 }
  41
  42 TEST_F(LlvmLibcAsinhfTest, InFloatRange) {
  43   constexpr uint32_t COUNT = 1'001;
  44   constexpr uint32_t STEP = UINT32_MAX / COUNT;
  45   for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
  46     float x = FPBits(v).get_val();
  47     if (FPBits(v).is_nan() || FPBits(v).is_inf())
  48       continue;
  49     ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, x,
  50                                    LIBC_NAMESPACE::asinhf(x), 0.5);
  51     ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, -x,
  52                                    LIBC_NAMESPACE::asinhf(-x), 0.5);
  53   }
  54 }
  55
  56 TEST_F(LlvmLibcAsinhfTest, SpecificBitPatterns) {
  57   constexpr int N = 11;
  58   constexpr uint32_t INPUTS[N] = {
  59       0x45abaf26, // |x| = 0x1.575e4cp12f
  60       0x49d29048, // |x| = 0x1.a5209p20f
  61       0x4bdd65a5, // |x| = 0x1.bacb4ap24f
  62       0x4c803f2c, // |x| = 0x1.007e58p26f
  63       0x4f8ffb03, // |x| = 0x1.1ff606p32f
  64       0x5c569e88, // |x| = 0x1.ad3d1p57f
  65       0x5e68984e, // |x| = 0x1.d1309cp61f
  66       0x655890d3, // |x| = 0x1.b121a6p75f
  67       0x65de7ca6, // |x| = 0x1.bcf94cp76f
  68       0x6eb1a8ec, // |x| = 0x1.6351d8p94f
  69       0x7997f30a, // |x| = 0x1.2fe614p116f
  70   };
  71
  72   for (int i = 0; i < N; ++i) {
  73     float x = FPBits(INPUTS[i]).get_val();
  74     EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, x,
  75                                    LIBC_NAMESPACE::asinhf(x), 0.5);
  76     EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, -x,
  77                                    LIBC_NAMESPACE::asinhf(-x), 0.5);
  78   }
  79 }