func Recv(buf interface{}, count int, datatype MPI_Datatype, source int,
tag int, comm MPI_Comm, status MPI_Status) int {
switch ptr := buf.(type) {
case *int:
ret := C.MPI_Recv(unsafe.Pointer(ptr), C.int(count), datatype,
C.int(source), C.int(tag), comm, status)
return int(ret)
}
return 0
}
func Recv_float64(recvbuf []float64, source, tag int, comm C.MPI_Comm) {
err := C.MPI_Recv(
unsafe.Pointer(&recvbuf[0]), C.int(len(recvbuf)), FLOAT64,
C.int(source), C.int(tag), comm, nil)
if err != 0 {
log.Fatal(err)
}
}
func RecvFloat32(data []float32, source, tag int) Status {
var status C.MPI_Status
C.MPI_Recv(unsafe.Pointer(&data[0]), C.int(len(data)), MPI_FLOAT, C.int(source), C.int(tag),
COMM_WORLD, &status)
var s Status
s.Source = int(status.MPI_SOURCE)
s.Tag = int(status.MPI_TAG)
s.Error = int(status.MPI_ERROR)
return s
}
func Recv_int32(recvbuf []int32, source, tag int, comm C.MPI_Comm) {
err := C.MPI_Recv(
unsafe.Pointer(&recvbuf[0]), C.int(len(recvbuf)), INT32,
C.int(source), C.int(tag), comm, nil)
if err != 0 {
log.Fatal(err)
}
}
//Recv
//Performs a standard-mode blocking receive.
func Recv(buffer interface{},
count int,
dataType Datatype,
source int,
tag int,
comm Comm) (Status, int) {
var status C.MPI_Status
bufferVoidPointer := Get_void_ptr(buffer)
err := C.MPI_Recv(bufferVoidPointer,
C.int(count),
C.MPI_Datatype(dataType),
C.int(source),
C.int(tag),
C.MPI_Comm(comm),
&status)
return Status(status), int(err)
}