src/server/ucx/utils.c

Fri, 28 Jun 2013 14:52:35 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Fri, 28 Jun 2013 14:52:35 +0200
changeset 81
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parent 71
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preparation for admin interface

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

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