comparison: ucx/utils.c
ucx/utils.c
- changeset 5
- 88625853ae74
- child 17
- 11dffb40cd91
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| 4:ae5a98f0545c | 5:88625853ae74 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2013 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include "utils.h" | |
| 30 #include "math.h" | |
| 31 | |
| 32 /* COPY FUCNTIONS */ | |
| 33 void* ucx_strcpy(void* s, void* data) { | |
| 34 char *str = (char*) s; | |
| 35 size_t n = 1+strlen(str); | |
| 36 char *cpy = (char*) malloc(n); | |
| 37 memcpy(cpy, str, n); | |
| 38 return cpy; | |
| 39 } | |
| 40 | |
| 41 void* ucx_memcpy(void* m, void* n) { | |
| 42 size_t k = *((size_t*)n); | |
| 43 void *cpy = malloc(k); | |
| 44 memcpy(cpy, m, k); | |
| 45 return cpy; | |
| 46 } | |
| 47 | |
| 48 /* COMPARE FUNCTION */ | |
| 49 | |
| 50 int ucx_strcmp(void *s1, void *s2, void *data) { | |
| 51 return strcmp((char*)s1, (char*)s2); | |
| 52 } | |
| 53 | |
| 54 int ucx_strncmp(void *s1, void *s2, void *n) { | |
| 55 return strncmp((char*)s1, (char*)s2, *((size_t*) n)); | |
| 56 } | |
| 57 | |
| 58 int ucx_intcmp(void *i1, void *i2, void *data) { | |
| 59 int a = *((int*) i1); | |
| 60 int b = *((int*) i2); | |
| 61 if (a == b) { | |
| 62 return 0; | |
| 63 } else { | |
| 64 return a < b ? -1 : 1; | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 int ucx_floatcmp(void *f1, void *f2, void *epsilon) { | |
| 69 float a = *((float*) f1); | |
| 70 float b = *((float*) f2); | |
| 71 float e = !epsilon ? 1e-6f : *((float*)epsilon); | |
| 72 if (fabsf(a - b) < e) { | |
| 73 return 0; | |
| 74 } else { | |
| 75 return a < b ? -1 : 1; | |
| 76 } | |
| 77 } | |
| 78 | |
| 79 int ucx_doublecmp(void *d1, void *d2, void *epsilon) { | |
| 80 double a = *((float*) d1); | |
| 81 double b = *((float*) d2); | |
| 82 double e = !epsilon ? 1e-14 : *((double*)epsilon); | |
| 83 if (fabs(a - b) < e) { | |
| 84 return 0; | |
| 85 } else { | |
| 86 return a < b ? -1 : 1; | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 int ucx_ptrcmp(void *ptr1, void *ptr2, void *data) { | |
| 91 if (ptr1 == ptr2) { | |
| 92 return 0; | |
| 93 } else { | |
| 94 return ptr1 < ptr2 ? -1 : 1; | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 int ucx_memcmp(void *ptr1, void *ptr2, void *n) { | |
| 99 return memcmp(ptr1, ptr2, *((size_t*)n)); | |
| 100 } |
