1// RUN: %clang_builtins %s %librt -o %t && %run %t 2// REQUIRES: int128 3//===-- floattisf_test.c - Test __floattisf -------------------------------===// 4// 5// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 6// See https://llvm.org/LICENSE.txt for license information. 7// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 8// 9//===----------------------------------------------------------------------===// 10// 11// This file tests __floattisf for the compiler_rt library. 12// 13//===----------------------------------------------------------------------===// 14 15#include "int_lib.h" 16#include <float.h> 17#include <stdio.h> 18 19#ifdef CRT_HAS_128BIT 20 21// Returns: convert a to a float, rounding toward even. 22 23// Assumption: float is a IEEE 32 bit floating point type 24// ti_int is a 64 bit integral type 25 26// seee eeee emmm mmmm mmmm mmmm mmmm mmmm 27 28COMPILER_RT_ABI float __floattisf(ti_int a); 29 30int test__floattisf(ti_int a, float expected) 31{ 32 float x = __floattisf(a); 33 if (x != expected) 34 { 35 twords at; 36 at.all = a; 37 printf("error in __floattisf(0x%.16llX%.16llX) = %a, expected %a\n", 38 at.s.high, at.s.low, x, expected); 39 } 40 return x != expected; 41} 42 43char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; 44char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0}; 45char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0}; 46 47#endif 48 49int main() 50{ 51#ifdef CRT_HAS_128BIT 52 if (test__floattisf(0, 0.0F)) 53 return 1; 54 55 if (test__floattisf(1, 1.0F)) 56 return 1; 57 if (test__floattisf(2, 2.0F)) 58 return 1; 59 if (test__floattisf(-1, -1.0F)) 60 return 1; 61 if (test__floattisf(-2, -2.0F)) 62 return 1; 63 64 if (test__floattisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F)) 65 return 1; 66 if (test__floattisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F)) 67 return 1; 68 69 if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000008000000000LL), 70 -0x1.FFFFFEp+62F)) 71 return 1; 72 if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000010000000000LL), 73 -0x1.FFFFFCp+62F)) 74 return 1; 75 76 if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000000LL), 77 -0x1.000000p+63F)) 78 return 1; 79 if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000001LL), 80 -0x1.000000p+63F)) 81 return 1; 82 83 if (test__floattisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F)) 84 return 1; 85 86 if (test__floattisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F)) 87 return 1; 88 if (test__floattisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F)) 89 return 1; 90 if (test__floattisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F)) 91 return 1; 92 if (test__floattisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F)) 93 return 1; 94 if (test__floattisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F)) 95 return 1; 96 97 if (test__floattisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F)) 98 return 1; 99 if (test__floattisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F)) 100 return 1; 101 if (test__floattisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F)) 102 return 1; 103 if (test__floattisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F)) 104 return 1; 105 if (test__floattisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F)) 106 return 1; 107 108 if (test__floattisf(make_ti(0x0007FB72E8000000LL, 0), 0x1.FEDCBAp+114F)) 109 return 1; 110 111 if (test__floattisf(make_ti(0x0007FB72EA000000LL, 0), 0x1.FEDCBAp+114F)) 112 return 1; 113 if (test__floattisf(make_ti(0x0007FB72EB000000LL, 0), 0x1.FEDCBAp+114F)) 114 return 1; 115 if (test__floattisf(make_ti(0x0007FB72EBFFFFFFLL, 0), 0x1.FEDCBAp+114F)) 116 return 1; 117 if (test__floattisf(make_ti(0x0007FB72EC000000LL, 0), 0x1.FEDCBCp+114F)) 118 return 1; 119 if (test__floattisf(make_ti(0x0007FB72E8000001LL, 0), 0x1.FEDCBAp+114F)) 120 return 1; 121 122 if (test__floattisf(make_ti(0x0007FB72E6000000LL, 0), 0x1.FEDCBAp+114F)) 123 return 1; 124 if (test__floattisf(make_ti(0x0007FB72E7000000LL, 0), 0x1.FEDCBAp+114F)) 125 return 1; 126 if (test__floattisf(make_ti(0x0007FB72E7FFFFFFLL, 0), 0x1.FEDCBAp+114F)) 127 return 1; 128 if (test__floattisf(make_ti(0x0007FB72E4000001LL, 0), 0x1.FEDCBAp+114F)) 129 return 1; 130 if (test__floattisf(make_ti(0x0007FB72E4000000LL, 0), 0x1.FEDCB8p+114F)) 131 return 1; 132 133#else 134 printf("skipped\n"); 135#endif 136 return 0; 137} 138