| /* |
| * 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; |
| } |
