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//------------------------------------------------------------------------------
// GB_cumsum_float: cumlative sum of a float array
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Compute the cumulative sum of an array count[0:n], of size n+1:
// count = cumsum ([0 count[0:n-1]]) ;
// That is, count [j] on input is overwritten with sum (count [0..j-1]).
// On input, count [n] is not accessed and is implicitly zero on input.
// On output, count [n] is the total sum.
#include "GB.h"
bool GB_cumsum_float // cumulative sum of an array
(
float *restrict count, // size n+1, input/output
const int64_t n,
int nthreads,
GB_Werk Werk
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
ASSERT (count != NULL) ;
ASSERT (n >= 0) ;
//--------------------------------------------------------------------------
// determine # of threads to use
//--------------------------------------------------------------------------
#if !defined ( _OPENMP )
nthreads = 1 ;
#endif
if (nthreads > 1)
{
nthreads = GB_IMIN (nthreads, n / GB_CHUNK_DEFAULT) ;
nthreads = GB_IMAX (nthreads, 1) ;
}
//--------------------------------------------------------------------------
// count = cumsum ([0 count[0:n-1]]) ;
//--------------------------------------------------------------------------
#define GB_CUMSUM1_TYPE GB_cumsum1_float
#define GB_CHECK_OVERFLOW 0
#define GB_NO_KRESULT
#define GB_WS_TYPE double
#include "cumsum/factory/GB_cumsum_template.c"
return (true) ;
}
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