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//------------------------------------------------------------------------------
// GB_mx_isequal: check if two matrices are equal
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_mex.h"
bool GB_mx_isequal // true if A and B are exactly the same
(
GrB_Matrix A,
GrB_Matrix B,
double eps // if A and B are both FP32 or FP64, and if eps > 0,
// then the values are considered equal if their relative
// difference is less than or equal to eps.
)
{
if (A == B) return (true) ;
if (A == NULL) return (false) ;
if (B == NULL) return (false) ;
int A_sparsity = GB_sparsity (A) ;
if (A_sparsity != GB_sparsity (B))
{
return (false) ;
}
if (A->magic != B->magic) return (false) ;
if (A->type != B->type ) return (false) ;
if (A->vlen != B->vlen ) return (false) ;
if (A->vdim != B->vdim ) return (false) ;
if (A->nvec != B->nvec ) return (false) ;
if (GB_nnz (A) != GB_nnz (B) ) return (false) ;
if ((A->h != NULL) != (B->h != NULL)) return (false) ;
if (A->is_csc != B->is_csc ) return (false) ;
if (A->nzombies != B->nzombies ) return (false) ;
GB_Pending A_Pending = A->Pending ;
GB_Pending B_Pending = B->Pending ;
if ((A_Pending != NULL) != (B_Pending != NULL)) return (false) ;
if (A_Pending != NULL)
{
if (A_Pending->n != B_Pending->n ) return (false) ;
if (A_Pending->sorted != B_Pending->sorted) return (false) ;
if (A_Pending->op != B_Pending->op ) return (false) ;
if (A_Pending->type != B_Pending->type ) return (false) ;
if (A_Pending->size != B_Pending->size ) return (false) ;
}
if (A->p_is_32 != B->p_is_32) return (false) ;
if (A->j_is_32 != B->j_is_32) return (false) ;
if (A->i_is_32 != B->i_is_32) return (false) ;
size_t psize = (A->p_is_32) ? sizeof (uint32_t) : sizeof (uint64_t) ;
size_t jsize = (A->j_is_32) ? sizeof (uint32_t) : sizeof (uint64_t) ;
size_t isize = (A->i_is_32) ? sizeof (uint32_t) : sizeof (uint64_t) ;
int64_t n = A->nvec ;
int64_t nnz = GB_nnz (A) ;
size_t asize = A->type->size ;
ASSERT (n >= 0 && n <= A->vdim) ;
bool A_is_dense = GB_is_dense (A) || GB_IS_FULL (A) ;
bool B_is_dense = GB_is_dense (B) || GB_IS_FULL (B) ;
if (A_is_dense != B_is_dense) return (false) ;
if (!A_is_dense)
{
if (!GB_mx_same ((char *) A->p, (char *) B->p, (n+1) * psize))
{
return (false) ;
}
if (A->h != NULL)
{
if (!GB_mx_same ((char *) A->h, (char *) B->h, n * jsize))
return (false) ;
}
}
if (A_sparsity == GxB_BITMAP)
{
if (!GB_mx_same ((char *) A->b, (char *) B->b, nnz))
{
return (false) ;
}
}
if (GB_nnz_max (A) > 0 && GB_nnz_max (B) > 0)
{
if (!A_is_dense)
{
if (!GB_mx_same ((char *) A->i, (char *) B->i, nnz * isize))
{
return (false) ;
}
}
if (A->type == GrB_FP32 && eps > 0)
{
if (!GB_mx_xsame32 (
A->x, A->iso, // OK
B->x, B->iso, // OK
A->b, nnz, A->i, eps))
{
return (false) ;
}
}
else if (A->type == GrB_FP64 && eps > 0)
{
if (!GB_mx_xsame64 (
A->x, A->iso, // OK
B->x, B->iso, // OK
A->b, nnz, A->i, eps))
{
return (false) ;
}
}
else
{
if (!GB_mx_xsame (
A->x, A->iso, // OK
B->x, B->iso, // OK
A->b, nnz, asize, A->i))
{
return (false) ;
}
}
}
if (A_Pending != NULL)
{
size_t xsize = A_Pending->size ;
int64_t np = A_Pending->n ;
if (!GB_mx_same ((char *) A_Pending->i, (char *) B_Pending->i,
np*isize))
{
return (false) ;
}
if (!GB_mx_same ((char *) A_Pending->j, (char *) B_Pending->j,
np*jsize))
{
return (false) ;
}
if ((A_Pending->x == NULL) != (B_Pending->x == NULL)) // OK
{
return (false) ;
}
if (A_Pending->x != NULL && B_Pending->x != NULL) // OK
{
if (!GB_mx_same ((char *) A_Pending->x, (char *) B_Pending->x,
np*xsize))
{
return (false) ;
}
}
}
return (true) ;
}
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