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//------------------------------------------------------------------------------
// GB_qsort_2: sort a 2-by-n list of integers, using A[0:1][ ] as the key
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_sort.h"
// returns true if A [a] < B [b]
#define GB_lt(A,a,B,b) \
GB_lt_2 (A ## _0, A ## _1, a, B ## _0, B ## _1, b)
// argument list for calling a function
#define GB_arg(A) \
A ## _0, A ## _1
// argument list for calling a function, with offset
#define GB_arg_offset(A,x) \
A ## _0 + (x), A ## _1 + (x)
// argument list for defining a function
#define GB_args(A) \
int64_t *restrict A ## _0, \
int64_t *restrict A ## _1
// each entry has a 2-integer key
#define GB_K 2
// swap A [a] and A [b]
#define GB_swap(A,a,b) \
{ \
int64_t t0 = A ## _0 [a] ; A ## _0 [a] = A ## _0 [b] ; A ## _0 [b] = t0 ; \
int64_t t1 = A ## _1 [a] ; A ## _1 [a] = A ## _1 [b] ; A ## _1 [b] = t1 ; \
}
#define GB_partition GB_partition_2
#define GB_quicksort GB_quicksort_2
#include "GB_qsort_template.c"
GB_PUBLIC
void GB_qsort_2 // sort array A of size 2-by-n, using 2 keys (A [0:1][])
(
int64_t *restrict A_0, // size n array
int64_t *restrict A_1, // size n array
const int64_t n
)
{
uint64_t seed = n ;
GB_quicksort (GB_arg (A), n, &seed) ;
}
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