isl_seq.c File Reference

#include "isl_seq.h"

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Functions
void	isl_seq_clr (isl_int *p, unsigned len)
void	isl_seq_neg (isl_int *dst, isl_int *src, unsigned len)
void	isl_seq_cpy (isl_int *dst, isl_int *src, unsigned len)
void	isl_seq_submul (isl_int *dst, isl_int f, isl_int *src, unsigned len)
void	isl_seq_swp_or_cpy (isl_int *dst, isl_int *src, unsigned len)
void	isl_seq_scale (isl_int *dst, isl_int *src, isl_int m, unsigned len)
void	isl_seq_scale_down (isl_int *dst, isl_int *src, isl_int m, unsigned len)
void	isl_seq_fdiv_q (isl_int *dst, isl_int *src, isl_int m, unsigned len)
void	isl_seq_fdiv_r (isl_int *dst, isl_int *src, isl_int m, unsigned len)
void	isl_seq_combine (isl_int *dst, isl_int m1, isl_int *src1, isl_int m2, isl_int *src2, unsigned len)
void	isl_seq_elim (isl_int *dst, isl_int *src, unsigned pos, unsigned len, isl_int *m)
int	isl_seq_eq (isl_int *p1, isl_int *p2, unsigned len)
int	isl_seq_cmp (isl_int *p1, isl_int *p2, unsigned len)
int	isl_seq_is_neg (isl_int *p1, isl_int *p2, unsigned len)
int	isl_seq_first_non_zero (isl_int *p, unsigned len)
int	isl_seq_abs_min_non_zero (isl_int *p, unsigned len)
void	isl_seq_gcd (isl_int *p, unsigned len, isl_int *gcd)
void	isl_seq_normalize (isl_int *p, unsigned len)
void	isl_seq_lcm (isl_int *p, unsigned len, isl_int *lcm)
void	isl_seq_inner_product (isl_int *p1, isl_int *p2, unsigned len, isl_int *prod)
uint32_t	isl_seq_hash (isl_int *p, unsigned len, uint32_t hash)
uint32_t	isl_seq_get_hash (isl_int *p, unsigned len)
uint32_t	isl_seq_get_hash_bits (isl_int *p, unsigned len, unsigned bits)

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Function Documentation

int isl_seq_abs_min_non_zero	(	isl_int *	p,
		unsigned	len
	)

Definition at line 156 of file isl_seq.c.

{
        int i, min = isl_seq_first_non_zero(p, len);
        if (min < 0)
                return -1;
        for (i = min + 1; i < len; ++i) {
                if (isl_int_is_zero(p[i]))
                        continue;
                if (isl_int_abs_lt(p[i], p[min]))
                        min = i;
        }
        return min;
}

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void isl_seq_clr	(	isl_int *	p,
		unsigned	len
	)

Definition at line 3 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_set_si(p[i], 0);
}

int isl_seq_cmp	(	isl_int *	p1,
		isl_int *	p2,
		unsigned	len
	)

Definition at line 121 of file isl_seq.c.

{
        int i;
        int cmp;
        for (i = 0; i < len; ++i)
                if ((cmp = isl_int_cmp(p1[i], p2[i])) != 0)
                        return cmp;
        return 0;
}

void isl_seq_combine	(	isl_int *	dst,
		isl_int	m1,
		isl_int *	src1,
		isl_int	m2,
		isl_int *	src2,
		unsigned	len
	)

Definition at line 66 of file isl_seq.c.

{
        int i;
        isl_int tmp;

        isl_int_init(tmp);
        for (i = 0; i < len; ++i) {
                isl_int_mul(tmp, m1, src1[i]);
                isl_int_addmul(tmp, m2, src2[i]);
                isl_int_set(dst[i], tmp);
        }
        isl_int_clear(tmp);
}

void isl_seq_cpy	(	isl_int *	dst,
		isl_int *	src,
		unsigned	len
	)

Definition at line 17 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_set(dst[i], src[i]);
}

void isl_seq_elim	(	isl_int *	dst,
		isl_int *	src,
		unsigned	pos,
		unsigned	len,
		isl_int *	m
	)

Definition at line 85 of file isl_seq.c.

{
        isl_int a;
        isl_int b;

        if (isl_int_is_zero(dst[pos]))
                return;

        isl_int_init(a);
        isl_int_init(b);

        isl_int_gcd(a, src[pos], dst[pos]);
        isl_int_divexact(b, dst[pos], a);
        if (isl_int_is_pos(src[pos]))
                isl_int_neg(b, b);
        isl_int_divexact(a, src[pos], a);
        isl_int_abs(a, a);
        isl_seq_combine(dst, a, dst, b, src, len);

        if (m)
                isl_int_mul(*m, *m, a);

        isl_int_clear(a);
        isl_int_clear(b);
}

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int isl_seq_eq	(	isl_int *	p1,
		isl_int *	p2,
		unsigned	len
	)

Definition at line 112 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                if (isl_int_ne(p1[i], p2[i]))
                        return 0;
        return 1;
}

void isl_seq_fdiv_q	(	isl_int *	dst,
		isl_int *	src,
		isl_int	m,
		unsigned	len
	)

Definition at line 52 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_fdiv_q(dst[i], src[i], m);
}

void isl_seq_fdiv_r	(	isl_int *	dst,
		isl_int *	src,
		isl_int	m,
		unsigned	len
	)

Definition at line 59 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_fdiv_r(dst[i], src[i], m);
}

int isl_seq_first_non_zero	(	isl_int *	p,
		unsigned	len
	)

Definition at line 146 of file isl_seq.c.

{
        int i;

        for (i = 0; i < len; ++i)
                if (!isl_int_is_zero(p[i]))
                        return i;
        return -1;
}

void isl_seq_gcd	(	isl_int *	p,
		unsigned	len,
		isl_int *	gcd
	)

Definition at line 170 of file isl_seq.c.

{
        int i, min = isl_seq_abs_min_non_zero(p, len);

        if (min < 0) {
                isl_int_set_si(*gcd, 0);
                return;
        }
        isl_int_abs(*gcd, p[min]);
        for (i = 0; isl_int_cmp_si(*gcd, 1) > 0 && i < len; ++i) {
                if (i == min)
                        continue;
                if (isl_int_is_zero(p[i]))
                        continue;
                isl_int_gcd(*gcd, *gcd, p[i]);
        }
}

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uint32_t isl_seq_get_hash	(	isl_int *	p,
		unsigned	len
	)

Definition at line 240 of file isl_seq.c.

{
        uint32_t hash = isl_hash_init();

        return isl_seq_hash(p, len, hash);
}

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uint32_t isl_seq_get_hash_bits	(	isl_int *	p,
		unsigned	len,
		unsigned	bits
	)

Definition at line 247 of file isl_seq.c.

{
        uint32_t hash;

        hash = isl_seq_get_hash(p, len);
        return isl_hash_bits(hash, bits);
}

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uint32_t isl_seq_hash	(	isl_int *	p,
		unsigned	len,
		uint32_t	hash
	)

Definition at line 227 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i) {
                if (isl_int_is_zero(p[i]))
                        continue;
                hash *= 16777619;
                hash ^= (i & 0xFF);
                hash = isl_int_hash(p[i], hash);
        }
        return hash;
}

void isl_seq_inner_product	(	isl_int *	p1,
		isl_int *	p2,
		unsigned	len,
		isl_int *	prod
	)

Definition at line 214 of file isl_seq.c.

{
        int i;
        if (len == 0) {
                isl_int_set_si(*prod, 0);
                return;
        }
        isl_int_mul(*prod, p1[0], p2[0]);
        for (i = 1; i < len; ++i)
                isl_int_addmul(*prod, p1[i], p2[i]);
}

int isl_seq_is_neg	(	isl_int *	p1,
		isl_int *	p2,
		unsigned	len
	)

Definition at line 131 of file isl_seq.c.

{
        int i;

        for (i = 0; i < len; ++i) {
                if (isl_int_abs_ne(p1[i], p2[i]))
                        return 0;
                if (isl_int_is_zero(p1[i]))
                        continue;
                if (isl_int_eq(p1[i], p2[i]))
                        return 0;
        }
        return 1;
}

void isl_seq_lcm	(	isl_int *	p,
		unsigned	len,
		isl_int *	lcm
	)

Definition at line 201 of file isl_seq.c.

{
        int i;

        if (len == 0) {
                isl_int_set_si(*lcm, 1);
                return;
        }
        isl_int_set(*lcm, p[0]);
        for (i = 1; i < len; ++i)
                isl_int_lcm(*lcm, *lcm, p[i]);
}

void isl_seq_neg	(	isl_int *	dst,
		isl_int *	src,
		unsigned	len
	)

Definition at line 10 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_neg(dst[i], src[i]);
}

void isl_seq_normalize	(	isl_int *	p,
		unsigned	len
	)

Definition at line 188 of file isl_seq.c.

{
        isl_int gcd;

        if (len == 0)
                return;
        isl_int_init(gcd);
        isl_seq_gcd(p, len, &gcd);
        if (!isl_int_is_zero(gcd))
                isl_seq_scale_down(p, p, gcd, len);
        isl_int_clear(gcd);
}

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void isl_seq_scale	(	isl_int *	dst,
		isl_int *	src,
		isl_int	m,
		unsigned	len
	)

Definition at line 38 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_mul(dst[i], src[i], m);
}

void isl_seq_scale_down	(	isl_int *	dst,
		isl_int *	src,
		isl_int	m,
		unsigned	len
	)

Definition at line 45 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_divexact(dst[i], src[i], m);
}

void isl_seq_submul	(	isl_int *	dst,
		isl_int	f,
		isl_int *	src,
		unsigned	len
	)

Definition at line 24 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_submul(dst[i], f, src[i]);
}

void isl_seq_swp_or_cpy	(	isl_int *	dst,
		isl_int *	src,
		unsigned	len
	)

Definition at line 31 of file isl_seq.c.

{
        int i;
        for (i = 0; i < len; ++i)
                isl_int_swap_or_set(dst[i], src[i]);
}