| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id$"; |
| 3 |
#endif |
| 4 |
#include <stdio.h> |
| 5 |
#include <stdlib.h> |
| 6 |
#include <string.h> |
| 7 |
|
| 8 |
#include "g3flist.h" |
| 9 |
|
| 10 |
|
| 11 |
static int resize_list(g3FList* fl,int sz) |
| 12 |
{ |
| 13 |
fl->list = (g3Float*) realloc(fl->list,(sz*fl->comp_size*sizeof(g3Float))); |
| 14 |
if (!fl->list) |
| 15 |
return 0; |
| 16 |
fl->cap = sz; |
| 17 |
if (sz < fl->size) |
| 18 |
fl->size = sz; |
| 19 |
if (sz == 0) |
| 20 |
fl->list = NULL; |
| 21 |
return 1; |
| 22 |
} |
| 23 |
|
| 24 |
int g3fl_init(g3FList* fl,int cs) |
| 25 |
{ |
| 26 |
fl->cap = 0; |
| 27 |
fl->size = 0; |
| 28 |
fl->list = NULL; |
| 29 |
fl->comp_size = cs; |
| 30 |
fl->ipos = 0; |
| 31 |
return resize_list(fl,G3FL_STARTCAP); |
| 32 |
} |
| 33 |
|
| 34 |
g3FList* g3fl_create(int cs) |
| 35 |
{ |
| 36 |
g3FList* res = (g3FList*) malloc(sizeof(g3FList)); |
| 37 |
if (!g3fl_init(res,cs)) |
| 38 |
return NULL; |
| 39 |
return res; |
| 40 |
} |
| 41 |
|
| 42 |
void g3fl_free(g3FList* fl) |
| 43 |
{ |
| 44 |
free(fl->list); |
| 45 |
free(fl); |
| 46 |
} |
| 47 |
|
| 48 |
g3Float* g3fl_append_new(g3FList* fl) |
| 49 |
{ |
| 50 |
if (fl->size == fl->cap) { |
| 51 |
if (!resize_list(fl,fl->cap*2)) { |
| 52 |
fprintf(stderr,"Out of memory in g3fl_append_new\n"); |
| 53 |
return NULL; |
| 54 |
} |
| 55 |
} |
| 56 |
fl->size++; |
| 57 |
return (&fl->list[G3FL_ID(fl,(fl->size-1))]); |
| 58 |
} |
| 59 |
|
| 60 |
int g3fl_append(g3FList* fl,g3Float* el) |
| 61 |
{ |
| 62 |
g3Float* ne; |
| 63 |
|
| 64 |
if (!(ne = g3fl_append_new(fl))) |
| 65 |
return 0; |
| 66 |
memcpy(ne,el,(fl->comp_size*sizeof(g3Float))); |
| 67 |
return 1; |
| 68 |
} |
| 69 |
|
| 70 |
g3Float* g3fl_get(g3FList* fl,int id) |
| 71 |
{ |
| 72 |
return &(fl->list[G3FL_ID(fl,id)]); |
| 73 |
} |
| 74 |
|
| 75 |
g3Float* g3fl_begin(g3FList* fl) |
| 76 |
{ |
| 77 |
if (fl->size == 0) |
| 78 |
return NULL; |
| 79 |
fl->ipos = 1; |
| 80 |
return g3fl_get(fl,0); |
| 81 |
} |
| 82 |
|
| 83 |
void g3fl_rewind(g3FList* fl) |
| 84 |
{ |
| 85 |
fl->ipos = 0; |
| 86 |
} |
| 87 |
|
| 88 |
static int comp_sort(const void* __v1,const void* __v2) { |
| 89 |
const g3Float *v1 = __v1; |
| 90 |
const g3Float* v2 = __v2; |
| 91 |
if (v1[0] < v2[0]) |
| 92 |
return -1; |
| 93 |
if (v1[0] > v2[0]) |
| 94 |
return 1; |
| 95 |
return 0; |
| 96 |
} |
| 97 |
|
| 98 |
int g3fl_sort(g3FList* fl,int cnum) |
| 99 |
{ |
| 100 |
g3Float* n; |
| 101 |
if (cnum >= fl->comp_size) |
| 102 |
return 0; |
| 103 |
if (cnum > 0) /* brute force method to avoid using inline functions */ |
| 104 |
for(n=g3fl_begin(fl);n != NULL;n=g3fl_next(fl)) |
| 105 |
gb_swap(n[0], n[cnum]); |
| 106 |
qsort(fl->list, fl->size, fl->comp_size*sizeof(g3Float), comp_sort); |
| 107 |
if (cnum > 0) /* brute force method to avoid using inline functions */ |
| 108 |
for(n=g3fl_begin(fl);n != NULL;n=g3fl_next(fl)) |
| 109 |
gb_swap(n[0], n[cnum]); |
| 110 |
return 1; |
| 111 |
} |
| 112 |
|
| 113 |
|
| 114 |
g3Float* g3fl_next(g3FList* fl) |
| 115 |
{ |
| 116 |
if (fl->ipos >= fl->size) |
| 117 |
return NULL; |
| 118 |
return g3fl_get(fl,fl->ipos++); |
| 119 |
} |
| 120 |
|
| 121 |
g3Float* g3fl_get_copy(g3FList* fl,int id) |
| 122 |
{ |
| 123 |
g3Float* ne; |
| 124 |
|
| 125 |
if (!(ne = (g3Float*) malloc(fl->comp_size*sizeof(g3Float)))) |
| 126 |
return NULL; |
| 127 |
memcpy(ne,&(fl->list[G3FL_ID(fl,id)]),(fl->comp_size*sizeof(g3Float))); |
| 128 |
return ne; |
| 129 |
} |
| 130 |
|
| 131 |
int g3fl_remove(g3FList* fl,int id) |
| 132 |
{ |
| 133 |
if ((id < 0) || (id >= fl->size)) |
| 134 |
return 0; |
| 135 |
if (id < (fl->size - 1)) |
| 136 |
memmove(&(fl->list[G3FL_ID(fl,id)]),&(fl->list[G3FL_ID(fl,id+1)]), |
| 137 |
fl->comp_size*sizeof(g3Float)); |
| 138 |
fl->size--; |
| 139 |
return 1; |
| 140 |
} |
| 141 |
|
| 142 |
int g3fl_remove_last(g3FList* fl) |
| 143 |
{ |
| 144 |
fl->size--; |
| 145 |
if (fl->size < (fl->cap/2)) |
| 146 |
return resize_list(fl,(fl->cap/2)); |
| 147 |
return 1; |
| 148 |
} |
| 149 |
|
| 150 |
|
| 151 |
#ifdef TEST_FLIST |
| 152 |
|
| 153 |
int main(int argc,char** argv) |
| 154 |
{ |
| 155 |
int i; |
| 156 |
g3FList* fl = g3fl_create(2); |
| 157 |
g3Float* n; |
| 158 |
|
| 159 |
for(i=0;i<10;i++) { |
| 160 |
n = g3fl_append_new(fl); |
| 161 |
n[0] = i; |
| 162 |
n[1] = 10-i; |
| 163 |
} |
| 164 |
g3fl_sort(fl, 1); |
| 165 |
for(n=g3fl_begin(fl);n != NULL;n=g3fl_next(fl)) |
| 166 |
printf("%f %f\n",n[0],n[1]); |
| 167 |
g3fl_free(fl); |
| 168 |
return EXIT_SUCCESS; |
| 169 |
} |
| 170 |
|
| 171 |
|
| 172 |
#endif |
