/usr/include/geomview/vvec.h is in libgeomview-dev 1.9.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | /* Copyright (C) 1992-1998 The Geometry Center
* Copyright (C) 1998-2000 Stuart Levy, Tamara Munzner, Mark Phillips
*
* This file is part of Geomview.
*
* Geomview is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* Geomview is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Geomview; see the file COPYING. If not, write
* to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
* USA, or visit http://www.gnu.org.
*/
#ifndef _GV_VVVEC_H_
#define _GV_VVVEC_H_
#include <ooglutil.h>
/*
* Variable-sized arrays ("vectors").
*/
static inline void vvinit(vvec *v, int elsize, int minelems);
static inline void vvuse(vvec *v, void *buf, int allocated);
static inline void vvzero(vvec *v);
static inline void vvtrim(vvec *v);
static inline void vvfree(vvec *v);
static inline void vvneeds(vvec *v, int needed);
static inline void *vvindex(vvec *v, int index);
static inline void vvcopy(vvec *src, vvec *dest);
static inline void
vvinit(vvec *v, int elsize, int minelems)
{
v->elsize = elsize;
v->count = 0;
v->malloced = 0;
v->dozero = 0;
v->allocated = -minelems;
v->base = NULL;
}
static inline void
vvuse(vvec *v, void *buf, int allocated)
{
vvfree(v);
v->base = buf;
v->allocated = allocated;
}
static inline void
vvzero(vvec *v)
{
v->dozero = 1;
if(v->allocated > v->count)
memset(v->base + v->elsize*v->count, 0,
v->elsize * (v->allocated - v->count));
}
/*
* Trim vvec to minimum size; ensure its buffer is malloced if it wasn't.
*/
static inline void
vvtrim(vvec *v)
{
int newalloc = (v->count > 0 ? v->count : 1);
int want = newalloc * v->elsize;
static char why[] = "trimming vvec";
(void)why;
if(!v->malloced) {
void *base = OOGLNewNE(char, want, why);
if(v->base) memcpy(base, v->base, want);
else memset(base, '\0', want);
v->base = base;
v->malloced = 1;
} else if(v->allocated > v->count) {
v->base = (void *)OOGLRenewNE(char, v->base, want, why);
} else
return;
v->allocated = newalloc;
}
static inline void
vvfree(vvec *v)
{
if(v->malloced) {
OOGLFree(v->base);
v->base = NULL;
v->malloced = 0;
}
}
static inline void
vvneeds(vvec *v, int needed)
{
if(needed > v->allocated) {
int had = v->allocated;
int want = needed + (needed>>2) + 1;
if(had < 0) {
if(want < -had)
want = -had;
had = 0;
} else {
int next = had + (had>>1) + 2;
if(next > needed)
want = next;
}
if(v->malloced) {
v->base = OOGLRenewNE(char, v->base,
want * v->elsize, "extending vvec");
if(had > v->count) had = v->count;
} else {
void *was = v->base;
v->base = OOGLNewNE(char, want * v->elsize, "allocating vvec");
if(v->count > 0 && had > 0)
memcpy(v->base, was, (v->count<had ? v->count:had) * v->elsize);
}
v->allocated = want;
v->malloced = 1;
if(v->dozero)
memset(v->base + v->elsize * had, 0,
v->elsize * (want-had));
}
}
static inline void *
vvindex(vvec *v, int index)
{
if(index < 0) {
OOGLError(1, "negative array index: %d", index);
return v->base;
}
if(index >= v->allocated)
vvneeds(v, index+1);
if(index >= v->count)
v->count = index+1;
return v->base + index*v->elsize;
}
static inline void
vvcopy(vvec *src, vvec *dest)
{
char *newbase;
if(src->base == NULL) {
*dest = *src;
} else {
vvneeds(dest, src->allocated);
newbase = dest->base;
*dest = *src;
dest->base = newbase;
memcpy(dest->base, src->base, dest->allocated * dest->elsize);
}
}
#endif
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