1 | /* |
2 | * Copyright 2010 INRIA Saclay |
3 | * |
4 | * Use of this software is governed by the MIT license |
5 | * |
6 | * Written by Sven Verdoolaege, INRIA Saclay - Ile-de-France, |
7 | * Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod, |
8 | * 91893 Orsay, France |
9 | */ |
10 | |
11 | #include <isl_pw_macro.h> |
12 | |
13 | __isl_give PW *FN(PW,scale)(__isl_take PW *pw, isl_int v) |
14 | { |
15 | int i; |
16 | isl_size n; |
17 | |
18 | if (isl_int_is_one(v)) |
19 | return pw; |
20 | if (pw && DEFAULT_IS_ZERO && isl_int_is_zero(v)) { |
21 | PW *zero; |
22 | isl_space *space = FN(PW,get_space)(pw); |
23 | zero = FN(PW,ZERO)(space OPT_TYPE_ARG(pw->)); |
24 | FN(PW,free)(pw); |
25 | return zero; |
26 | } |
27 | if (isl_int_is_neg(v)) |
28 | pw = FN(PW,negate_type)(pw); |
29 | |
30 | n = FN(PW,n_piece)(pw); |
31 | if (n < 0) |
32 | return FN(PW,free)(pw); |
33 | for (i = 0; i < n; ++i) { |
34 | EL *el; |
35 | |
36 | el = FN(PW,take_base_at)(pw, pos: i); |
37 | el = FN(EL,scale)(aff: el, f: v); |
38 | pw = FN(PW,restore_base_at)(pw, pos: i, el); |
39 | } |
40 | |
41 | return pw; |
42 | } |
43 | |