| 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 | |