| 1 | /* |
|---|
| 2 | * Copyright 2017 Sven Verdoolaege |
|---|
| 3 | * |
|---|
| 4 | * Use of this software is governed by the MIT license |
|---|
| 5 | * |
|---|
| 6 | * Written by Sven Verdoolaege |
|---|
| 7 | */ |
|---|
| 8 | |
|---|
| 9 | #define xCAT(A,B) A ## B |
|---|
| 10 | #define CAT(A,B) xCAT(A,B) |
|---|
| 11 | #undef TYPE |
|---|
| 12 | #define TYPE CAT(isl_,BASE) |
|---|
| 13 | #define xBFN(BASE,NAME) isl_ ## BASE ## _ ## NAME |
|---|
| 14 | #define BFN(BASE,NAME) xBFN(BASE,NAME) |
|---|
| 15 | |
|---|
| 16 | /* Return the minimal (maximal if "max" is set) value attained |
|---|
| 17 | * by the given set dimension, |
|---|
| 18 | * independently of the parameter values and of any other dimensions. |
|---|
| 19 | * |
|---|
| 20 | * Return infinity or negative infinity if the optimal value is unbounded and |
|---|
| 21 | * NaN if "set" is empty. |
|---|
| 22 | */ |
|---|
| 23 | static __isl_give isl_val *BFN(BASE,dim_opt_val)(__isl_take TYPE *set, int max, |
|---|
| 24 | int pos) |
|---|
| 25 | { |
|---|
| 26 | isl_local_space *ls; |
|---|
| 27 | isl_aff *obj; |
|---|
| 28 | isl_val *v; |
|---|
| 29 | |
|---|
| 30 | if (BFN(BASE,check_range)(bset: set, type: isl_dim_set, first: pos, n: 1) < 0) |
|---|
| 31 | goto error; |
|---|
| 32 | ls = isl_local_space_from_space(BFN(BASE,get_space)(bset: set)); |
|---|
| 33 | obj = isl_aff_var_on_domain(ls, type: isl_dim_set, pos); |
|---|
| 34 | v = BFN(BASE,opt_val)(bset: set, max, obj); |
|---|
| 35 | isl_aff_free(aff: obj); |
|---|
| 36 | BFN(BASE,free)(bset: set); |
|---|
| 37 | |
|---|
| 38 | return v; |
|---|
| 39 | error: |
|---|
| 40 | BFN(BASE,free)(bset: set); |
|---|
| 41 | return NULL; |
|---|
| 42 | } |
|---|
| 43 | |
|---|
