Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 1 | //===-- fixunsdfti_test.c - Test __fixunsdfti -----------------------------===// |
| 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 __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 | #ifdef CRT_HAS_128BIT |
| 28 | |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 29 | COMPILER_RT_ABI tu_int __fixunsdfti(double a); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 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 | #ifdef CRT_HAS_128BIT |
| 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 | } |