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//------------------------------------------------------------------------------
// LAGraph/src/test/test_Random.c: test cases for random vector generator
//------------------------------------------------------------------------------
// LAGraph, (c) 2019-2022 by The LAGraph Contributors, All Rights Reserved.
// SPDX-License-Identifier: BSD-2-Clause
//
// For additional details (including references to third party source code and
// other files) see the LICENSE file or contact permission@sei.cmu.edu. See
// Contributors.txt for a full list of contributors. Created, in part, with
// funding and support from the U.S. Government (see Acknowledgments.txt file).
// DM22-0790
// Contributed by Timothy A. Davis, Texas A&M University
//------------------------------------------------------------------------------
#include <stdio.h>
#include <acutest.h>
#include <LAGraphX.h>
#include <LAGraph_test.h>
char msg [LAGRAPH_MSG_LEN] ;
GrB_Vector Seed = NULL ;
//------------------------------------------------------------------------------
// test_Random
//------------------------------------------------------------------------------
void test_Random (void)
{
LAGraph_Init (msg) ;
uint64_t seed = 42 ;
LAGraph_PrintLevel pr = LAGraph_COMPLETE_VERBOSE ;
for (int trial = 0 ; trial <= 4 ; trial++)
{
seed++ ;
printf ("\n=============================== seed: %g\n", (double) seed) ;
// generate a seed vector (all entries present)
printf ("\nDense random vector:\n") ;
GrB_Index n = 8 ;
OK (GrB_Vector_new (&Seed, GrB_UINT64, n)) ;
OK (GrB_Vector_assign_UINT64 (Seed, NULL, NULL, 0, GrB_ALL, n, NULL)) ;
OK (LAGraph_Random_Seed (Seed, seed, msg)) ;
OK (LAGraph_Vector_Print (Seed, pr, stdout, NULL)) ;
printf ("\nnext dense random vector:\n") ;
OK (LAGraph_Random_Next (Seed, msg)) ;
OK (LAGraph_Vector_Print (Seed, pr, stdout, NULL)) ;
// free all workspace
OK (GrB_Vector_free (&Seed)) ;
// generate a sparse seed vector
printf ("\nSparse random vector (same seed):\n") ;
OK (GrB_Vector_new (&Seed, GrB_UINT64, n)) ;
for (int i = 0 ; i < n ; i += 2)
{
OK (GrB_Vector_setElement_UINT64 (Seed, 0, i)) ;
}
OK (LAGraph_Random_Seed (Seed, seed, msg)) ;
OK (LAGraph_Vector_Print (Seed, pr, stdout, NULL)) ;
printf ("\nnext sparse random vector:\n") ;
OK (LAGraph_Random_Next (Seed, msg)) ;
OK (LAGraph_Vector_Print (Seed, pr, stdout, NULL)) ;
// free all workspace
OK (GrB_Vector_free (&Seed)) ;
}
LAGraph_Finalize (msg) ;
}
//------------------------------------------------------------------------------
// Test list
//------------------------------------------------------------------------------
TEST_LIST = {
{"Random", test_Random},
{NULL, NULL}
};