| 1 | /* |
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| 2 | * Copyright 2012 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/space.h> |
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| 11 | #include <isl/local_space.h> |
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| 12 | |
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| 13 | #include <isl_multi_macro.h> |
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| 14 | |
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| 15 | /* Construct a multi expression in the given space with value zero in |
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| 16 | * each of the output dimensions. |
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| 17 | */ |
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| 18 | __isl_give MULTI(BASE) *FN(MULTI(BASE),zero)(__isl_take isl_space *space) |
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| 19 | { |
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| 20 | isl_size n; |
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| 21 | MULTI(BASE) *multi; |
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| 22 | |
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| 23 | n = isl_space_dim(space , type: isl_dim_out); |
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| 24 | if (n < 0) |
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| 25 | goto error; |
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| 26 | |
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| 27 | multi = FN(MULTI(BASE),alloc)(space: isl_space_copy(space)); |
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| 28 | |
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| 29 | if (!n) |
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| 30 | isl_space_free(space); |
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| 31 | else { |
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| 32 | int i; |
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| 33 | isl_local_space *ls; |
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| 34 | EL *el; |
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| 35 | |
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| 36 | space = isl_space_domain(space); |
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| 37 | ls = isl_local_space_from_space(space); |
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| 38 | el = FN(EL,zero_on_domain)(ls); |
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| 39 | |
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| 40 | for (i = 0; i < n; ++i) |
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| 41 | multi = FN(FN(MULTI(BASE),set),BASE)(multi, pos: i, |
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| 42 | FN(EL,copy)(aff: el)); |
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| 43 | |
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| 44 | FN(EL,free)(aff: el); |
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| 45 | } |
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| 46 | |
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| 47 | return multi; |
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| 48 | error: |
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| 49 | isl_space_free(space); |
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| 50 | return NULL; |
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| 51 | } |
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| 52 | |
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| 53 | #include "isl_multi_zero_space_templ.c" |
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| 54 | |
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