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1/*2 * Copyright 2019 Cerebras Systems3 *4 * Use of this software is governed by the MIT license5 *6 * Written by Sven Verdoolaege,7 * Cerebras Systems, 175 S San Antonio Rd, Los Altos, CA, USA8 */9 10#define xFN(TYPE,NAME) TYPE ## _ ## NAME11#define FN(TYPE,NAME) xFN(TYPE,NAME)12 13/* Return a list of minima (maxima if "max" is set)14 * for each of the expressions in "f" over their (shared) domain.15 *16 * An element in the list is infinity or negative infinity if the optimal17 * value of the corresponding expression is unbounded and18 * NaN if the domain of the expression is empty.19 *20 * Iterate over all the expressions in "f" and collect the results.21 */22static __isl_give isl_multi_val *FN(TYPE,opt_multi_val)(__isl_take TYPE *f,23 int max)24{25 int i;26 isl_size n;27 isl_space *space;28 isl_multi_val *mv;29 30 n = FN(TYPE,dim)(f, isl_dim_out);31 if (n < 0)32 f = FN(TYPE,free)(f);33 if (!f)34 return NULL;35 36 space = isl_space_range(FN(TYPE,get_space)(f));37 space = isl_space_drop_all_params(space);38 mv = isl_multi_val_zero(space);39 40 for (i = 0; i < n; ++i) {41 isl_val *v;42 isl_pw_aff *pa;43 44 pa = FN(TYPE,get_pw_aff)(f, i);45 v = isl_pw_aff_opt_val(pa, max);46 mv = isl_multi_val_set_val(mv, i, v);47 }48 49 FN(TYPE,free)(f);50 return mv;51}52 53/* Return a list of minima54 * for each of the expressions in "f" over their (shared) domain.55 *56 * An element in the list is negative infinity if the optimal57 * value of the corresponding expression is unbounded and58 * NaN if the domain of the expression is empty.59 */60__isl_give isl_multi_val *FN(TYPE,min_multi_val)(__isl_take TYPE *f)61{62 return FN(TYPE,opt_multi_val)(f, 0);63}64 65/* Return a list of maxima66 * for each of the expressions in "f" over their (shared) domain.67 *68 * An element in the list is infinity if the optimal69 * value of the corresponding expression is unbounded and70 * NaN if the domain of the expression is empty.71 */72__isl_give isl_multi_val *FN(TYPE,max_multi_val)(__isl_take TYPE *f)73{74 return FN(TYPE,opt_multi_val)(f, 1);75}76