/* **********************************************************************
MiniSat -- Copyright (c) 2005, Niklas Sorensson
http://www.cs.chalmers.se/Cs/Research/FormalMethods/MiniSat/

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
********************************************************************** */
// Modified to compile with MS Visual Studio 6.0 by Alan Mishchenko

#ifndef vec_h
#define vec_h

#include <stdlib.h>


// vector of 32-bit intergers (added for 64-bit portability)
struct veci_t {
  int size;
  int cap;
  int *ptr;
};
typedef struct veci_t veci;

static inline void veci_new(veci *v) {
  v->size = 0;
  v->cap = 4;
  v->ptr = (int *)malloc(sizeof(int) * v->cap);
}

static inline void veci_delete(veci *v) {
  free(v->ptr);
}

static inline int *veci_begin(veci *v) {
  return v->ptr;
}

static inline int veci_size(veci *v) {
  return v->size;
}

static inline void veci_resize(veci *v, int k) {
  v->size = k;
  // only safe to shrink !!
}

static inline void veci_push(veci *v, int e) {
  if (v->size == v->cap) {
    int newsize = v->cap * 2 + 1;
    v->ptr = (int *)realloc(v->ptr, sizeof(int) * newsize);
    v->cap = newsize;
  }
  v->ptr[v->size++] = e;
}

// vector of 32- or 64-bit pointers
struct vecp_t {
  int size;
  int cap;
  void **ptr;
};
typedef struct vecp_t vecp;

static inline void vecp_new(vecp *v) {
  v->size = 0;
  v->cap = 4;
  v->ptr = (void **)malloc(sizeof(void *) * v->cap);
}

static inline void vecp_delete(vecp *v) {
  free(v->ptr);
}

static inline void **vecp_begin(vecp *v) {
  return v->ptr;
}

static inline int vecp_size(vecp *v) {
  return v->size;
}

static inline void vecp_resize(vecp *v, int k) {
  v->size = k;
}				// only safe to shrink !!

static inline void vecp_push(vecp *v, void *e) {
  if (v->size == v->cap) {
    int newsize = v->cap * 2 + 1;
    v->ptr = (void **)realloc(v->ptr, sizeof(void *) * newsize);
    v->cap = newsize;
  }
  v->ptr[v->size++] = e;
}

#endif				/* vec_h */