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 "src/__support/FPUtil/FPBits.h"
  10 #include "src/errno/libc_errno.h"
  11 #include "src/math/asinhf.h"
  12 #include "test/UnitTest/FPMatcher.h"
  13 #include "test/UnitTest/Test.h"
  14 #include "utils/MPFRWrapper/MPFRUtils.h"
  15 #include <math.h>
  16
  17 #include <errno.h>
  18 #include <stdint.h>
  19
  20 using LlvmLibcAsinhfTest = LIBC_NAMESPACE::testing::FPTest<float>;
  21
  22 namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
  23
  24 TEST_F(LlvmLibcAsinhfTest, SpecialNumbers) {
  25   libc_errno = 0;
  26
  27   EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asinhf(aNaN));
  28   EXPECT_MATH_ERRNO(0);
  29
  30   EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::asinhf(0.0f));
  31   EXPECT_MATH_ERRNO(0);
  32
  33   EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::asinhf(-0.0f));
  34   EXPECT_MATH_ERRNO(0);
  35
  36   EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::asinhf(inf));
  37   EXPECT_MATH_ERRNO(0);
  38
  39   EXPECT_FP_EQ_ALL_ROUNDING(neg_inf, LIBC_NAMESPACE::asinhf(neg_inf));
  40   EXPECT_MATH_ERRNO(0);
  41 }
  42
  43 TEST_F(LlvmLibcAsinhfTest, InFloatRange) {
  44   constexpr uint32_t COUNT = 1'001;
  45   constexpr uint32_t STEP = UINT32_MAX / COUNT;
  46   for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
  47     float x = float(FPBits(v));
  48     if (isnan(x) || isinf(x))
  49       continue;
  50     ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, x,
  51                                    LIBC_NAMESPACE::asinhf(x), 0.5);
  52     ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, -x,
  53                                    LIBC_NAMESPACE::asinhf(-x), 0.5);
  54   }
  55 }
  56
  57 TEST_F(LlvmLibcAsinhfTest, SpecificBitPatterns) {
  58   constexpr int N = 11;
  59   constexpr uint32_t INPUTS[N] = {
  60       0x45abaf26, // |x| = 0x1.575e4cp12f
  61       0x49d29048, // |x| = 0x1.a5209p20f
  62       0x4bdd65a5, // |x| = 0x1.bacb4ap24f
  63       0x4c803f2c, // |x| = 0x1.007e58p26f
  64       0x4f8ffb03, // |x| = 0x1.1ff606p32f
  65       0x5c569e88, // |x| = 0x1.ad3d1p57f
  66       0x5e68984e, // |x| = 0x1.d1309cp61f
  67       0x655890d3, // |x| = 0x1.b121a6p75f
  68       0x65de7ca6, // |x| = 0x1.bcf94cp76f
  69       0x6eb1a8ec, // |x| = 0x1.6351d8p94f
  70       0x7997f30a, // |x| = 0x1.2fe614p116f
  71   };
  72
  73   for (int i = 0; i < N; ++i) {
  74     float x = float(FPBits(INPUTS[i]));
  75     EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, x,
  76                                    LIBC_NAMESPACE::asinhf(x), 0.5);
  77     EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, -x,
  78                                    LIBC_NAMESPACE::asinhf(-x), 0.5);
  79   }
  80 }