| 1 | /*
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| 2 | * Copyright (c) 2012 Martin Decky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #include <stdio.h>
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| 30 | #include <stdlib.h>
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| 31 | #include <sftypes.h>
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| 32 | #include <add.h>
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| 33 | #include <bool.h>
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| 34 | #include "../tester.h"
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| 35 |
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| 36 | #define OPERANDS 5
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| 37 | #define PRECISION 10000
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| 38 |
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| 39 | #define PRIdCMPTYPE PRId32
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| 40 |
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| 41 | typedef int32_t cmptype_t;
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| 42 |
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| 43 | static float float_op_a[OPERANDS] =
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| 44 | {3.5, -2.1, 100.0, 50.0, -1024.0};
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| 45 |
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| 46 | static float float_op_b[OPERANDS] =
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| 47 | {-2.1, 100.0, 50.0, -1024.0, 3.5};
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| 48 |
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| 49 | static cmptype_t cmpabs(cmptype_t a)
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| 50 | {
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| 51 | if (a >= 0)
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| 52 | return a;
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| 53 |
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| 54 | return -a;
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| 55 | }
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| 56 |
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| 57 | static bool test_float_add(void)
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| 58 | {
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| 59 | bool correct = true;
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| 60 |
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| 61 | for (unsigned int i = 0; i < OPERANDS; i++) {
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| 62 | for (unsigned int j = 0; j < OPERANDS; j++) {
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| 63 | float a = float_op_a[i];
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| 64 | float b = float_op_b[j];
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| 65 | float c = a + b;
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| 66 |
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| 67 | float_t sa;
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| 68 | float_t sb;
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| 69 | float_t sc;
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| 70 |
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| 71 | sa.val = float_op_a[i];
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| 72 | sb.val = float_op_b[i];
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| 73 | sc.data = add_float(sa.data, sb.data);
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| 74 |
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| 75 | cmptype_t ic = (cmptype_t) (c * PRECISION);
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| 76 | cmptype_t isc = (cmptype_t) (sc.val * PRECISION);
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| 77 | cmptype_t diff = cmpabs(ic - isc);
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| 78 |
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| 79 | if (diff != 0) {
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| 80 | TPRINTF("i=%u, j=%u diff=%" PRIdCMPTYPE "\n", i, j, diff);
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| 81 | correct = false;
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| 82 | }
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| 83 | }
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| 84 | }
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| 85 |
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| 86 | return correct;
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| 87 | }
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| 88 |
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| 89 | const char *test_softfloat1(void)
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| 90 | {
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| 91 | if (!test_float_add())
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| 92 | return "Float addition failed";
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| 93 |
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| 94 | return NULL;
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| 95 | }
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