| 1 | /* |
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| 2 | * Copyright 2013 Ecole Normale Superieure |
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| 3 | * |
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| 4 | * Use of this software is governed by the MIT license |
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| 5 | * |
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| 6 | * Written by Sven Verdoolaege, |
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| 7 | * Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France |
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| 8 | */ |
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| 9 | |
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| 10 | #include <isl_multi_macro.h> |
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| 11 | |
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| 12 | /* Coalesce the elements of "multi". |
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| 13 | * |
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| 14 | * Note that such coalescing does not change the meaning of "multi" |
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| 15 | * so there is no need to cow. We do need to be careful not to |
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| 16 | * destroy any other copies of "multi" in case of failure. |
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| 17 | */ |
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| 18 | __isl_give MULTI(BASE) *FN(MULTI(BASE),coalesce)(__isl_take MULTI(BASE) *multi) |
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| 19 | { |
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| 20 | int i; |
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| 21 | |
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| 22 | if (!multi) |
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| 23 | return NULL; |
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| 24 | |
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| 25 | for (i = 0; i < multi->n; ++i) { |
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| 26 | EL *el = FN(EL,copy)(pw: multi->u.p[i]); |
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| 27 | el = FN(EL,coalesce)(pw: el); |
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| 28 | if (!el) |
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| 29 | return FN(MULTI(BASE),free)(multi); |
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| 30 | FN(EL,free)(pw: multi->u.p[i]); |
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| 31 | multi->u.p[i] = el; |
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| 32 | } |
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| 33 | |
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| 34 | return multi; |
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| 35 | } |
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| 36 | |
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