1 //===-- fixunsdfti_test.c - Test __fixunsdfti -----------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file tests __fixunsdfti for the compiler_rt library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "int_lib.h" 15 #include <stdio.h> 16 17 // Returns: convert a to a unsigned long long, rounding toward zero. 18 // Negative values all become zero. 19 20 // Assumption: double is a IEEE 64 bit floating point type 21 // tu_int is a 64 bit integral type 22 // value in double is representable in tu_int or is negative 23 // (no range checking performed) 24 25 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 26 27 #if __x86_64 28 29 tu_int __fixunsdfti(double a); 30 31 int test__fixunsdfti(double a, tu_int expected) 32 { 33 tu_int x = __fixunsdfti(a); 34 if (x != expected) 35 { 36 utwords xt; 37 xt.all = x; 38 utwords expectedt; 39 expectedt.all = expected; 40 printf("error in __fixunsdfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n", 41 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low); 42 } 43 return x != expected; 44 } 45 46 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0}; 47 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; 48 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; 49 50 #endif 51 52 int main() 53 { 54 #if __x86_64 55 if (test__fixunsdfti(0.0, 0)) 56 return 1; 57 58 if (test__fixunsdfti(0.5, 0)) 59 return 1; 60 if (test__fixunsdfti(0.99, 0)) 61 return 1; 62 if (test__fixunsdfti(1.0, 1)) 63 return 1; 64 if (test__fixunsdfti(1.5, 1)) 65 return 1; 66 if (test__fixunsdfti(1.99, 1)) 67 return 1; 68 if (test__fixunsdfti(2.0, 2)) 69 return 1; 70 if (test__fixunsdfti(2.01, 2)) 71 return 1; 72 if (test__fixunsdfti(-0.5, 0)) 73 return 1; 74 if (test__fixunsdfti(-0.99, 0)) 75 return 1; 76 #if !TARGET_LIBGCC 77 if (test__fixunsdfti(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec 78 return 1; 79 if (test__fixunsdfti(-1.5, 0)) 80 return 1; 81 if (test__fixunsdfti(-1.99, 0)) 82 return 1; 83 if (test__fixunsdfti(-2.0, 0)) 84 return 1; 85 if (test__fixunsdfti(-2.01, 0)) 86 return 1; 87 #endif 88 89 if (test__fixunsdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL)) 90 return 1; 91 if (test__fixunsdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL)) 92 return 1; 93 94 #if !TARGET_LIBGCC 95 if (test__fixunsdfti(-0x1.FFFFFEp+62, 0)) 96 return 1; 97 if (test__fixunsdfti(-0x1.FFFFFCp+62, 0)) 98 return 1; 99 #endif 100 101 if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800LL)) 102 return 1; 103 if (test__fixunsdfti(0x1.0000000000000p+63, 0x8000000000000000LL)) 104 return 1; 105 if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL)) 106 return 1; 107 if (test__fixunsdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL)) 108 return 1; 109 110 if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+127, make_ti(0xFFFFFFFFFFFFF800LL, 0))) 111 return 1; 112 if (test__fixunsdfti(0x1.0000000000000p+127, make_ti(0x8000000000000000LL, 0))) 113 return 1; 114 if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0))) 115 return 1; 116 if (test__fixunsdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0))) 117 return 1; 118 119 #if !TARGET_LIBGCC 120 if (test__fixunsdfti(-0x1.FFFFFFFFFFFFFp+62, 0)) 121 return 1; 122 if (test__fixunsdfti(-0x1.FFFFFFFFFFFFEp+62, 0)) 123 return 1; 124 #endif 125 126 #endif 127 return 0; 128 } 129
