| Daniel Dunbar | fd08999 | 2009-06-26 16:47:03 +0000 | [diff] [blame^] | 1 | //===-- fixunsxfdi_test.c - Test __fixunsxfdi -----------------------------===// |
| 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 __fixunsxfdi for the compiler_rt library. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #if !_ARCH_PPC |
| 15 | |
| 16 | #include "int_lib.h" |
| 17 | #include <stdio.h> |
| 18 | |
| 19 | // Returns: convert a to a unsigned long long, rounding toward zero. |
| 20 | // Negative values all become zero. |
| 21 | |
| 22 | // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes |
| 23 | // du_int is a 64 bit integral type |
| 24 | // value in long double is representable in du_int or is negative |
| 25 | // (no range checking performed) |
| 26 | |
| 27 | // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | |
| 28 | // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm |
| 29 | |
| 30 | du_int __fixunsxfdi(long double a); |
| 31 | |
| 32 | int test__fixunsxfdi(long double a, du_int expected) |
| 33 | { |
| 34 | du_int x = __fixunsxfdi(a); |
| 35 | if (x != expected) |
| 36 | printf("error in __fixunsxfdi(%LA) = %llX, expected %llX\n", |
| 37 | a, x, expected); |
| 38 | return x != expected; |
| 39 | } |
| 40 | |
| 41 | char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0}; |
| 42 | char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0}; |
| 43 | char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0}; |
| 44 | |
| 45 | #endif |
| 46 | |
| 47 | int main() |
| 48 | { |
| 49 | #if !_ARCH_PPC |
| 50 | if (test__fixunsxfdi(0.0, 0)) |
| 51 | return 1; |
| 52 | |
| 53 | if (test__fixunsxfdi(0.5, 0)) |
| 54 | return 1; |
| 55 | if (test__fixunsxfdi(0.99, 0)) |
| 56 | return 1; |
| 57 | if (test__fixunsxfdi(1.0, 1)) |
| 58 | return 1; |
| 59 | if (test__fixunsxfdi(1.5, 1)) |
| 60 | return 1; |
| 61 | if (test__fixunsxfdi(1.99, 1)) |
| 62 | return 1; |
| 63 | if (test__fixunsxfdi(2.0, 2)) |
| 64 | return 1; |
| 65 | if (test__fixunsxfdi(2.01, 2)) |
| 66 | return 1; |
| 67 | if (test__fixunsxfdi(-0.5, 0)) |
| 68 | return 1; |
| 69 | if (test__fixunsxfdi(-0.99, 0)) |
| 70 | return 1; |
| 71 | if (test__fixunsxfdi(-1.0, 0)) |
| 72 | return 1; |
| 73 | if (test__fixunsxfdi(-1.5, 0)) |
| 74 | return 1; |
| 75 | if (test__fixunsxfdi(-1.99, 0)) |
| 76 | return 1; |
| 77 | if (test__fixunsxfdi(-2.0, 0)) |
| 78 | return 1; |
| 79 | if (test__fixunsxfdi(-2.01, 0)) |
| 80 | return 1; |
| 81 | |
| 82 | if (test__fixunsxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL)) |
| 83 | return 1; |
| 84 | if (test__fixunsxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL)) |
| 85 | return 1; |
| 86 | |
| 87 | if (test__fixunsxfdi(-0x1.FFFFFEp+62, 0)) |
| 88 | return 1; |
| 89 | if (test__fixunsxfdi(-0x1.FFFFFCp+62, 0)) |
| 90 | return 1; |
| 91 | |
| 92 | if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL)) |
| 93 | return 1; |
| 94 | if (test__fixunsxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL)) |
| 95 | return 1; |
| 96 | |
| 97 | if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFp+62, 0)) |
| 98 | return 1; |
| 99 | if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFEp+62, 0)) |
| 100 | return 1; |
| 101 | |
| 102 | if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL)) |
| 103 | return 1; |
| 104 | if (test__fixunsxfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL)) |
| 105 | return 1; |
| 106 | if (test__fixunsxfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL)) |
| 107 | return 1; |
| 108 | if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL)) |
| 109 | return 1; |
| 110 | if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL)) |
| 111 | return 1; |
| 112 | |
| 113 | if (test__fixunsxfdi(-0x1.0000000000000000p+63L, 0)) |
| 114 | return 1; |
| 115 | if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0)) |
| 116 | return 1; |
| 117 | if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0)) |
| 118 | return 1; |
| 119 | |
| 120 | #endif |
| 121 | return 0; |
| 122 | } |