Matt Turner | 5de8610 | 2015-03-12 11:34:05 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2015 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #include <stdbool.h> |
| 26 | #include <string.h> |
| 27 | #include <math.h> |
| 28 | |
| 29 | #include "macros.h" |
| 30 | #include "rounding.h" |
| 31 | |
| 32 | int main(int argc, char *argv[]) |
| 33 | { |
| 34 | const struct { |
| 35 | float input, expected; |
| 36 | } float_data[] = { |
| 37 | { 0.0, 0.0 }, |
| 38 | { nextafterf(0.5, 0.0), 0.0 }, |
| 39 | { 0.5, 0.0 }, |
| 40 | { nextafterf(0.5, 1.0), 1.0 }, |
| 41 | { 1.0, 1.0 }, |
| 42 | { nextafterf(1.5, 1.0), 1.0 }, |
| 43 | { 1.5, 2.0 }, |
| 44 | { nextafterf(1.5, 2.0), 2.0 }, |
| 45 | { 2.0, 2.0 }, |
| 46 | { nextafterf(2.5, 2.0), 2.0 }, |
| 47 | { 2.5, 2.0 }, |
| 48 | { nextafterf(2.5, 3.0), 3.0 }, |
| 49 | }; |
| 50 | |
| 51 | const struct { |
| 52 | double input, expected; |
| 53 | } double_data[] = { |
| 54 | { 0.0, 0.0 }, |
| 55 | { nextafter(0.5, 0.0), 0.0 }, |
| 56 | { 0.5, 0.0 }, |
| 57 | { nextafter(0.5, 1.0), 1.0 }, |
| 58 | { 1.0, 1.0 }, |
| 59 | { nextafter(1.5, 1.0), 1.0 }, |
| 60 | { 1.5, 2.0 }, |
| 61 | { nextafter(1.5, 2.0), 2.0 }, |
| 62 | { 2.0, 2.0 }, |
| 63 | { nextafter(2.5, 2.0), 2.0 }, |
| 64 | { 2.5, 2.0 }, |
| 65 | { nextafter(2.5, 3.0), 3.0 }, |
| 66 | }; |
| 67 | |
| 68 | bool failed = false; |
| 69 | int i; |
| 70 | |
| 71 | for (i = 0; i < ARRAY_SIZE(float_data); i++) { |
| 72 | float output = _mesa_roundevenf(float_data[i].input); |
| 73 | if (memcmp(&float_data[i].expected, &output, sizeof(float))) { |
| 74 | fprintf(stderr, "%d float: expected %f (%a) from " |
| 75 | "_mesa_roundevenf(%f (%a)) but got %f (%a)\n", |
| 76 | i, |
| 77 | float_data[i].expected, |
| 78 | float_data[i].expected, |
| 79 | float_data[i].input, |
| 80 | float_data[i].input, |
| 81 | output, |
| 82 | output); |
| 83 | failed = true; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /* Test negated values */ |
| 88 | for (i = 0; i < ARRAY_SIZE(float_data); i++) { |
| 89 | float output = _mesa_roundevenf(-float_data[i].input); |
| 90 | float negated_expected = -float_data[i].expected; |
| 91 | if (memcmp(&negated_expected, &output, sizeof(float))) { |
| 92 | fprintf(stderr, "%d float: expected %f (%a) from " |
| 93 | "_mesa_roundevenf(%f (%a)) but got %f (%a)\n", |
| 94 | i, |
| 95 | negated_expected, |
| 96 | negated_expected, |
| 97 | -float_data[i].input, |
| 98 | -float_data[i].input, |
| 99 | output, |
| 100 | output); |
| 101 | failed = true; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | for (i = 0; i < ARRAY_SIZE(double_data); i++) { |
| 106 | double output = _mesa_roundeven(double_data[i].input); |
| 107 | if (memcmp(&double_data[i].expected, &output, sizeof(double))) { |
| 108 | fprintf(stderr, "%d double: expected %f (%a) from " |
| 109 | "_mesa_roundeven(%f (%a)) but got %f (%a)\n", |
| 110 | i, |
| 111 | double_data[i].expected, |
| 112 | double_data[i].expected, |
| 113 | double_data[i].input, |
| 114 | double_data[i].input, |
| 115 | output, |
| 116 | output); |
| 117 | failed = true; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | /* Test negated values */ |
| 122 | for (i = 0; i < ARRAY_SIZE(double_data); i++) { |
| 123 | double output = _mesa_roundeven(-double_data[i].input); |
| 124 | double negated_expected = -double_data[i].expected; |
| 125 | if (memcmp(&negated_expected, &output, sizeof(double))) { |
| 126 | fprintf(stderr, "%d double: expected %f (%a) from " |
| 127 | "_mesa_roundeven(%f (%a)) but got %f (%a)\n", |
| 128 | i, |
| 129 | negated_expected, |
| 130 | negated_expected, |
| 131 | -double_data[i].input, |
| 132 | -double_data[i].input, |
| 133 | output, |
| 134 | output); |
| 135 | failed = true; |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | return failed; |
| 140 | } |