1 //===-- floatuntisf.c - Test __floatuntisf --------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file tests __floatuntisf for the compiler_rt library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "int_lib.h" 15 #include <float.h> 16 #include <stdio.h> 17 18 #ifdef CRT_HAS_128BIT 19 20 // Returns: convert a to a float, rounding toward even. 21 22 // Assumption: float is a IEEE 32 bit floating point type 23 // tu_int is a 128 bit integral type 24 25 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm 26 27 float __floatuntisf(tu_int a); 28 29 int test__floatuntisf(tu_int a, float expected) 30 { 31 float x = __floatuntisf(a); 32 if (x != expected) 33 { 34 utwords at; 35 at.all = a; 36 printf("error in __floatuntisf(0x%.16llX%.16llX) = %a, expected %a\n", 37 at.s.high, at.s.low, x, expected); 38 } 39 return x != expected; 40 } 41 42 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0}; 43 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0}; 44 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0}; 45 46 #endif 47 48 int main() 49 { 50 #ifdef CRT_HAS_128BIT 51 if (test__floatuntisf(0, 0.0F)) 52 return 1; 53 54 if (test__floatuntisf(1, 1.0F)) 55 return 1; 56 if (test__floatuntisf(2, 2.0F)) 57 return 1; 58 if (test__floatuntisf(20, 20.0F)) 59 return 1; 60 61 if (test__floatuntisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F)) 62 return 1; 63 if (test__floatuntisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F)) 64 return 1; 65 66 if (test__floatuntisf(make_ti(0x8000008000000000LL, 0), 0x1.000001p+127F)) 67 return 1; 68 if (test__floatuntisf(make_ti(0x8000000000000800LL, 0), 0x1.0p+127F)) 69 return 1; 70 if (test__floatuntisf(make_ti(0x8000010000000000LL, 0), 0x1.000002p+127F)) 71 return 1; 72 73 if (test__floatuntisf(make_ti(0x8000000000000000LL, 0), 0x1.000000p+127F)) 74 return 1; 75 76 if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F)) 77 return 1; 78 79 if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50F)) 80 return 1; 81 if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50F)) 82 return 1; 83 84 if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50F)) 85 return 1; 86 87 if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50F)) 88 return 1; 89 if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50F)) 90 return 1; 91 if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50F)) 92 return 1; 93 94 if (test__floatuntisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F)) 95 return 1; 96 if (test__floatuntisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F)) 97 return 1; 98 99 if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F)) 100 return 1; 101 102 if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F)) 103 return 1; 104 if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F)) 105 return 1; 106 if (test__floatuntisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F)) 107 return 1; 108 if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F)) 109 return 1; 110 if (test__floatuntisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F)) 111 return 1; 112 113 if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F)) 114 return 1; 115 if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F)) 116 return 1; 117 if (test__floatuntisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F)) 118 return 1; 119 if (test__floatuntisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F)) 120 return 1; 121 if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F)) 122 return 1; 123 124 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCB90000000000001LL), 125 0x1.FEDCBAp+76F)) 126 return 1; 127 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBA0000000000000LL), 128 0x1.FEDCBAp+76F)) 129 return 1; 130 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBAFFFFFFFFFFFFFLL), 131 0x1.FEDCBAp+76F)) 132 return 1; 133 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000000LL), 134 0x1.FEDCBCp+76F)) 135 return 1; 136 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000001LL), 137 0x1.FEDCBCp+76F)) 138 return 1; 139 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBBFFFFFFFFFFFFFLL), 140 0x1.FEDCBCp+76F)) 141 return 1; 142 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000000LL), 143 0x1.FEDCBCp+76F)) 144 return 1; 145 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000001LL), 146 0x1.FEDCBCp+76F)) 147 return 1; 148 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000000LL), 149 0x1.FEDCBCp+76F)) 150 return 1; 151 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000001LL), 152 0x1.FEDCBEp+76F)) 153 return 1; 154 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBDFFFFFFFFFFFFFLL), 155 0x1.FEDCBEp+76F)) 156 return 1; 157 if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBE0000000000000LL), 158 0x1.FEDCBEp+76F)) 159 return 1; 160 161 #else 162 printf("skipped\n"); 163 #endif 164 return 0; 165 } 166
