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/*
* Copyright 2008-2009 Katholieke Universiteit Leuven
*
* Use of this software is governed by the GNU LGPLv2.1 license
*
* Written by Sven Verdoolaege, K.U.Leuven, Departement
* Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
*/
#include <isl_ctx_private.h>
#include <isl/seq.h>
#include <isl/vec.h>
struct isl_vec *isl_vec_alloc(struct isl_ctx *ctx, unsigned size)
{
struct isl_vec *vec;
vec = isl_alloc_type(ctx, struct isl_vec);
if (!vec)
return NULL;
vec->block = isl_blk_alloc(ctx, size);
if (isl_blk_is_error(vec->block))
goto error;
vec->ctx = ctx;
isl_ctx_ref(ctx);
vec->ref = 1;
vec->size = size;
vec->el = vec->block.data;
return vec;
error:
isl_blk_free(ctx, vec->block);
return NULL;
}
__isl_give isl_vec *isl_vec_extend(__isl_take isl_vec *vec, unsigned size)
{
if (!vec)
return NULL;
if (size <= vec->size)
return vec;
vec = isl_vec_cow(vec);
if (!vec)
return NULL;
vec->block = isl_blk_extend(vec->ctx, vec->block, size);
if (!vec->block.data)
goto error;
vec->size = size;
vec->el = vec->block.data;
return vec;
error:
isl_vec_free(vec);
return NULL;
}
__isl_give isl_vec *isl_vec_zero_extend(__isl_take isl_vec *vec, unsigned size)
{
int extra;
if (!vec)
return NULL;
if (size <= vec->size)
return vec;
vec = isl_vec_cow(vec);
if (!vec)
return NULL;
extra = size - vec->size;
vec = isl_vec_extend(vec, size);
if (!vec)
return NULL;
isl_seq_clr(vec->el + size - extra, extra);
return vec;
}
struct isl_vec *isl_vec_copy(struct isl_vec *vec)
{
if (!vec)
return NULL;
vec->ref++;
return vec;
}
struct isl_vec *isl_vec_dup(struct isl_vec *vec)
{
struct isl_vec *vec2;
if (!vec)
return NULL;
vec2 = isl_vec_alloc(vec->ctx, vec->size);
isl_seq_cpy(vec2->el, vec->el, vec->size);
return vec2;
}
struct isl_vec *isl_vec_cow(struct isl_vec *vec)
{
struct isl_vec *vec2;
if (!vec)
return NULL;
if (vec->ref == 1)
return vec;
vec2 = isl_vec_dup(vec);
isl_vec_free(vec);
return vec2;
}
void isl_vec_free(struct isl_vec *vec)
{
if (!vec)
return;
if (--vec->ref > 0)
return;
isl_ctx_deref(vec->ctx);
isl_blk_free(vec->ctx, vec->block);
free(vec);
}
__isl_give isl_printer *isl_printer_print_vec(__isl_take isl_printer *printer,
__isl_keep isl_vec *vec)
{
int i;
if (!printer || !vec)
goto error;
printer = isl_printer_print_str(printer, "[");
for (i = 0; i < vec->size; ++i) {
if (i)
printer = isl_printer_print_str(printer, ",");
printer = isl_printer_print_isl_int(printer, vec->el[i]);
}
printer = isl_printer_print_str(printer, "]");
return printer;
error:
isl_printer_free(printer);
return NULL;
}
void isl_vec_dump(struct isl_vec *vec)
{
isl_printer *printer;
if (!vec)
return;
printer = isl_printer_to_file(vec->ctx, stderr);
printer = isl_printer_print_vec(printer, vec);
printer = isl_printer_end_line(printer);
isl_printer_free(printer);
}
__isl_give isl_vec *isl_vec_clr(__isl_take isl_vec *vec)
{
vec = isl_vec_cow(vec);
if (!vec)
return NULL;
isl_seq_clr(vec->el, vec->size);
return vec;
}
void isl_vec_lcm(struct isl_vec *vec, isl_int *lcm)
{
isl_seq_lcm(vec->block.data, vec->size, lcm);
}
/* Given a rational vector, with the denominator in the first element
* of the vector, round up all coordinates.
*/
struct isl_vec *isl_vec_ceil(struct isl_vec *vec)
{
vec = isl_vec_cow(vec);
if (!vec)
return NULL;
isl_seq_cdiv_q(vec->el + 1, vec->el + 1, vec->el[0], vec->size - 1);
isl_int_set_si(vec->el[0], 1);
return vec;
}
struct isl_vec *isl_vec_normalize(struct isl_vec *vec)
{
if (!vec)
return NULL;
isl_seq_normalize(vec->ctx, vec->el, vec->size);
return vec;
}
__isl_give isl_vec *isl_vec_scale(__isl_take isl_vec *vec, isl_int m)
{
if (isl_int_is_one(m))
return vec;
vec = isl_vec_cow(vec);
if (!vec)
return NULL;
isl_seq_scale(vec->el, vec->el, m, vec->size);
return vec;
}
__isl_give isl_vec *isl_vec_add(__isl_take isl_vec *vec1,
__isl_take isl_vec *vec2)
{
vec1 = isl_vec_cow(vec1);
if (!vec1 || !vec2)
goto error;
isl_assert(vec1->ctx, vec1->size == vec2->size, goto error);
isl_seq_combine(vec1->el, vec1->ctx->one, vec1->el,
vec1->ctx->one, vec2->el, vec1->size);
isl_vec_free(vec2);
return vec1;
error:
isl_vec_free(vec1);
isl_vec_free(vec2);
return NULL;
}
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