1 #include <isl_val_private.h>
3 #define xFN(TYPE,NAME) TYPE ## _ ## NAME
4 #define FN(TYPE,NAME) xFN(TYPE,NAME)
6 /* Compute the given non-zero power of "map" and return the result.
7 * If the exponent "exp" is negative, then the -exp th power of the inverse
8 * relation is computed.
10 __isl_give TYPE *FN(TYPE,fixed_power)(__isl_take TYPE *map, isl_int exp)
19 ctx = FN(TYPE,get_ctx)(map);
20 if (isl_int_is_zero(exp))
21 isl_die(ctx, isl_error_invalid,
22 "expecting non-zero exponent", goto error);
24 if (isl_int_is_neg(exp)) {
25 isl_int_neg(exp, exp);
26 map = FN(TYPE,reverse)(map);
27 return FN(TYPE,fixed_power)(map, exp);
32 isl_int_fdiv_r(r, exp, ctx->two);
34 if (!isl_int_is_zero(r)) {
36 res = FN(TYPE,copy)(map);
38 res = FN(TYPE,apply_range)(res,
40 res = FN(TYPE,coalesce)(res);
46 isl_int_fdiv_q(exp, exp, ctx->two);
47 if (isl_int_is_zero(exp))
50 map = FN(TYPE,apply_range)(map, FN(TYPE,copy)(map));
51 map = FN(TYPE,coalesce)(map);
62 /* Compute the given non-zero power of "map" and return the result.
63 * If the exponent "exp" is negative, then the -exp th power of the inverse
64 * relation is computed.
66 __isl_give TYPE *FN(TYPE,fixed_power_val)(__isl_take TYPE *map,
67 __isl_take isl_val *exp)
71 if (!isl_val_is_int(exp))
72 isl_die(FN(TYPE,get_ctx)(map), isl_error_invalid,
73 "expecting integer exponent", goto error);
74 map = FN(TYPE,fixed_power)(map, exp->n);