1 //===-- fixdfti_test.c - Test __fixdfti -----------------------------------===// 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 __fixdfti for the compiler_rt library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #if __x86_64 15 16 #include "int_lib.h" 17 #include <stdio.h> 18 19 // Returns: convert a to a signed long long, rounding toward zero. 20 21 // Assumption: double is a IEEE 64 bit floating point type 22 // su_int is a 32 bit integral type 23 // value in double is representable in ti_int (no range checking performed) 24 25 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 26 27 ti_int __fixdfti(double a); 28 29 int test__fixdfti(double a, ti_int expected) 30 { 31 ti_int x = __fixdfti(a); 32 if (x != expected) 33 { 34 twords xt; 35 xt.all = x; 36 twords expectedt; 37 expectedt.all = expected; 38 printf("error in __fixdfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n", 39 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low); 40 } 41 return x != expected; 42 } 43 44 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; 45 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; 46 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; 47 48 #endif 49 50 int main() 51 { 52 #if __x86_64 53 if (test__fixdfti(0.0, 0)) 54 return 1; 55 56 if (test__fixdfti(0.5, 0)) 57 return 1; 58 if (test__fixdfti(0.99, 0)) 59 return 1; 60 if (test__fixdfti(1.0, 1)) 61 return 1; 62 if (test__fixdfti(1.5, 1)) 63 return 1; 64 if (test__fixdfti(1.99, 1)) 65 return 1; 66 if (test__fixdfti(2.0, 2)) 67 return 1; 68 if (test__fixdfti(2.01, 2)) 69 return 1; 70 if (test__fixdfti(-0.5, 0)) 71 return 1; 72 if (test__fixdfti(-0.99, 0)) 73 return 1; 74 if (test__fixdfti(-1.0, -1)) 75 return 1; 76 if (test__fixdfti(-1.5, -1)) 77 return 1; 78 if (test__fixdfti(-1.99, -1)) 79 return 1; 80 if (test__fixdfti(-2.0, -2)) 81 return 1; 82 if (test__fixdfti(-2.01, -2)) 83 return 1; 84 85 if (test__fixdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL)) 86 return 1; 87 if (test__fixdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL)) 88 return 1; 89 90 if (test__fixdfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, 91 0x8000008000000000LL))) 92 return 1; 93 if (test__fixdfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, 94 0x8000010000000000LL))) 95 return 1; 96 97 if (test__fixdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL)) 98 return 1; 99 if (test__fixdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL)) 100 return 1; 101 102 if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, 103 0x8000000000000400LL))) 104 return 1; 105 if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, 106 0x8000000000000800LL))) 107 return 1; 108 109 if (test__fixdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0))) 110 return 1; 111 if (test__fixdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0))) 112 return 1; 113 114 if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+126, make_ti(0x8000000000000400LL, 0))) 115 return 1; 116 if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+126, make_ti(0x8000000000000800LL, 0))) 117 return 1; 118 119 #else 120 printf("skipped\n"); 121 #endif 122 return 0; 123 } 124
