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
|
/*
* Copyright 2010 INRIA Saclay
*
* Use of this software is governed by the MIT license
*
* Written by Sven Verdoolaege, INRIA Saclay - Ile-de-France,
* Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod,
* 91893 Orsay, France
*/
#include <isl_pw_macro.h>
__isl_give PW *FN(PW,scale)(__isl_take PW *pw, isl_int v)
{
int i;
isl_size n;
if (isl_int_is_one(v))
return pw;
if (pw && DEFAULT_IS_ZERO && isl_int_is_zero(v)) {
PW *zero;
isl_space *space = FN(PW,get_space)(pw);
zero = FN(PW,ZERO)(space OPT_TYPE_ARG(pw->));
FN(PW,free)(pw);
return zero;
}
if (isl_int_is_neg(v))
pw = FN(PW,negate_type)(pw);
n = FN(PW,n_piece)(pw);
if (n < 0)
return FN(PW,free)(pw);
for (i = 0; i < n; ++i) {
EL *el;
el = FN(PW,take_base_at)(pw, i);
el = FN(EL,scale)(el, v);
pw = FN(PW,restore_base_at)(pw, i, el);
}
return pw;
}
|
