3 void isl_seq_clr(isl_int
*p
, unsigned len
)
6 for (i
= 0; i
< len
; ++i
)
7 isl_int_set_si(p
[i
], 0);
10 void isl_seq_neg(isl_int
*dst
, isl_int
*src
, unsigned len
)
13 for (i
= 0; i
< len
; ++i
)
14 isl_int_neg(dst
[i
], src
[i
]);
17 void isl_seq_cpy(isl_int
*dst
, isl_int
*src
, unsigned len
)
20 for (i
= 0; i
< len
; ++i
)
21 isl_int_set(dst
[i
], src
[i
]);
24 void isl_seq_submul(isl_int
*dst
, isl_int f
, isl_int
*src
, unsigned len
)
27 for (i
= 0; i
< len
; ++i
)
28 isl_int_submul(dst
[i
], f
, src
[i
]);
31 void isl_seq_swp_or_cpy(isl_int
*dst
, isl_int
*src
, unsigned len
)
34 for (i
= 0; i
< len
; ++i
)
35 isl_int_swap_or_set(dst
[i
], src
[i
]);
38 void isl_seq_scale(isl_int
*dst
, isl_int
*src
, isl_int m
, unsigned len
)
41 for (i
= 0; i
< len
; ++i
)
42 isl_int_mul(dst
[i
], src
[i
], m
);
45 void isl_seq_scale_down(isl_int
*dst
, isl_int
*src
, isl_int m
, unsigned len
)
48 for (i
= 0; i
< len
; ++i
)
49 isl_int_divexact(dst
[i
], src
[i
], m
);
52 void isl_seq_cdiv_q(isl_int
*dst
, isl_int
*src
, isl_int m
, unsigned len
)
55 for (i
= 0; i
< len
; ++i
)
56 isl_int_cdiv_q(dst
[i
], src
[i
], m
);
59 void isl_seq_fdiv_q(isl_int
*dst
, isl_int
*src
, isl_int m
, unsigned len
)
62 for (i
= 0; i
< len
; ++i
)
63 isl_int_fdiv_q(dst
[i
], src
[i
], m
);
66 void isl_seq_fdiv_r(isl_int
*dst
, isl_int
*src
, isl_int m
, unsigned len
)
69 for (i
= 0; i
< len
; ++i
)
70 isl_int_fdiv_r(dst
[i
], src
[i
], m
);
73 void isl_seq_combine(isl_int
*dst
, isl_int m1
, isl_int
*src1
,
74 isl_int m2
, isl_int
*src2
, unsigned len
)
80 for (i
= 0; i
< len
; ++i
) {
81 isl_int_mul(tmp
, m1
, src1
[i
]);
82 isl_int_addmul(tmp
, m2
, src2
[i
]);
83 isl_int_set(dst
[i
], tmp
);
89 * Let d = dst[pos] and s = src[pos]
90 * dst is replaced by |s| dst - sgn(s)d src
92 void isl_seq_elim(isl_int
*dst
, isl_int
*src
, unsigned pos
, unsigned len
,
98 if (isl_int_is_zero(dst
[pos
]))
104 isl_int_gcd(a
, src
[pos
], dst
[pos
]);
105 isl_int_divexact(b
, dst
[pos
], a
);
106 if (isl_int_is_pos(src
[pos
]))
108 isl_int_divexact(a
, src
[pos
], a
);
110 isl_seq_combine(dst
, a
, dst
, b
, src
, len
);
113 isl_int_mul(*m
, *m
, a
);
119 int isl_seq_eq(isl_int
*p1
, isl_int
*p2
, unsigned len
)
122 for (i
= 0; i
< len
; ++i
)
123 if (isl_int_ne(p1
[i
], p2
[i
]))
128 int isl_seq_cmp(isl_int
*p1
, isl_int
*p2
, unsigned len
)
132 for (i
= 0; i
< len
; ++i
)
133 if ((cmp
= isl_int_cmp(p1
[i
], p2
[i
])) != 0)
138 int isl_seq_is_neg(isl_int
*p1
, isl_int
*p2
, unsigned len
)
142 for (i
= 0; i
< len
; ++i
) {
143 if (isl_int_abs_ne(p1
[i
], p2
[i
]))
145 if (isl_int_is_zero(p1
[i
]))
147 if (isl_int_eq(p1
[i
], p2
[i
]))
153 int isl_seq_first_non_zero(isl_int
*p
, unsigned len
)
157 for (i
= 0; i
< len
; ++i
)
158 if (!isl_int_is_zero(p
[i
]))
163 int isl_seq_last_non_zero(isl_int
*p
, unsigned len
)
167 for (i
= len
- 1; i
>= 0; --i
)
168 if (!isl_int_is_zero(p
[i
]))
173 int isl_seq_abs_min_non_zero(isl_int
*p
, unsigned len
)
175 int i
, min
= isl_seq_first_non_zero(p
, len
);
178 for (i
= min
+ 1; i
< len
; ++i
) {
179 if (isl_int_is_zero(p
[i
]))
181 if (isl_int_abs_lt(p
[i
], p
[min
]))
187 void isl_seq_gcd(isl_int
*p
, unsigned len
, isl_int
*gcd
)
189 int i
, min
= isl_seq_abs_min_non_zero(p
, len
);
192 isl_int_set_si(*gcd
, 0);
195 isl_int_abs(*gcd
, p
[min
]);
196 for (i
= 0; isl_int_cmp_si(*gcd
, 1) > 0 && i
< len
; ++i
) {
199 if (isl_int_is_zero(p
[i
]))
201 isl_int_gcd(*gcd
, *gcd
, p
[i
]);
205 void isl_seq_normalize(struct isl_ctx
*ctx
, isl_int
*p
, unsigned len
)
209 isl_seq_gcd(p
, len
, &ctx
->normalize_gcd
);
210 if (!isl_int_is_zero(ctx
->normalize_gcd
) &&
211 !isl_int_is_one(ctx
->normalize_gcd
))
212 isl_seq_scale_down(p
, p
, ctx
->normalize_gcd
, len
);
215 void isl_seq_lcm(isl_int
*p
, unsigned len
, isl_int
*lcm
)
220 isl_int_set_si(*lcm
, 1);
223 isl_int_set(*lcm
, p
[0]);
224 for (i
= 1; i
< len
; ++i
)
225 isl_int_lcm(*lcm
, *lcm
, p
[i
]);
228 void isl_seq_inner_product(isl_int
*p1
, isl_int
*p2
, unsigned len
,
233 isl_int_set_si(*prod
, 0);
236 isl_int_mul(*prod
, p1
[0], p2
[0]);
237 for (i
= 1; i
< len
; ++i
)
238 isl_int_addmul(*prod
, p1
[i
], p2
[i
]);
241 uint32_t isl_seq_hash(isl_int
*p
, unsigned len
, uint32_t hash
)
244 for (i
= 0; i
< len
; ++i
) {
245 if (isl_int_is_zero(p
[i
]))
249 hash
= isl_int_hash(p
[i
], hash
);
254 uint32_t isl_seq_get_hash(isl_int
*p
, unsigned len
)
256 uint32_t hash
= isl_hash_init();
258 return isl_seq_hash(p
, len
, hash
);
261 uint32_t isl_seq_get_hash_bits(isl_int
*p
, unsigned len
, unsigned bits
)
265 hash
= isl_seq_get_hash(p
, len
);
266 return isl_hash_bits(hash
, bits
);