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.TH "SHMEM_LONG_ADD" "3" "Jul 22, 2024" "" "Open MPI"
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\fI\%shmem_int_add\fP(3), shmem_int4_add(3), shmem_int8_add(3),
\fI\%shmem_long_add\fP(3), \fI\%shmem_longlong_add\fP(3) \- Performs an atomic
add operation.
.SH SYNOPSIS
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C or C++:
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.nf
.ft C
#include <mpp/shmem.h>

void shmem_int_add(int *target, int value, int pe)
void shmem_long_add(long *target, long value, int pe)
void shmem_longlong_add(long long *target, long long value,
  int pe)
.ft P
.fi
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Fortran:
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.ft C
include \(aqmpp/shmem.h\(aq

INTEGER pe

CALL SHMEM_INT4_ADD(target, value, pe)
CALL SHMEM_INT8_ADD(target, value, pe)
.ft P
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.SH DESCRIPTION
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The atomic add routines add \fBvalue\fP to the data at address \fBtarget\fP
on PE \fBpe\fP\&. The operation completes without the possibility of another
process updating target between the time of the fetch and the update.
.sp
The arguments are as follows:
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.TP
.B target
The remotely accessible integer data object to be updated on the
remote PE. If you are using C/C++, the type of target should match
that implied in the SYNOPSIS section. If you are using the Fortran
compiler, it must be of type integer with an element size of 4 bytes
for SHMEM_INT4_ADD and 8 bytes for SHMEM_INT8_ADD.
.TP
.B value
The value to be atomically added to target. If you are using C/C++,
the type of value should match that implied in the SYNOPSIS section.
If you are using Fortran, it must be of type integer with an element
size of target.
.TP
.B pe
An integer that indicates the PE number upon which target is to be
updated. If you are using Fortran, it must be a default integer
value.
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.SH NOTES
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The term remotely accessible is defined in \fIintro_shmem\fP(3).
.sp
\fBSEE ALSO:\fP
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\fIintro_shmem\fP(3) \fIshmem_cache\fP(3)
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.SH COPYRIGHT
2003-2024, The Open MPI Community
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