spmd_min_max.F File Reference

#include "implicit_f.inc"
#include "spmd.inc"
#include "task_c.inc"

Go to the source code of this file.

Functions/Subroutines
subroutine	spmd_min_max (x1, y1, z1, x2, y2, z2)

Function/Subroutine Documentation

spmd_min_max()

subroutine spmd_min_max	(		x1,
			y1,
			z1,
			x2,
			y2,
			z2 )

Definition at line 31 of file spmd_min_max.F.

C spmd_min_max calculates the minimum of the real numbers X1, Y1, Z1 and the
C maximum of the real numbers X2, Y2, Z2 on p0
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
        USE spmd_comm_world_mod, ONLY : spmd_comm_world
#include      "implicit_f.inc"
C-----------------------------------------------
C   M e s s a g e   P a s s i n g
C-----------------------------------------------
#include "spmd.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "task_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
C   REAL*4 ou REAL*8
      my_real
     .  x1, y1, z1, x2, y2, z2
C-----------------------------------------------
C   L o c a l  V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
      INTEGER IERROR
      my_real
     .  tmp1(3),tmpo(3)
C-----------------------------------------------
C   S o u r c e  L i n e s
C-----------------------------------------------
      tmp1(1) = x1
      tmp1(2) = y1
      tmp1(3) = z1
      call mpi_allreduce(tmp1,tmpo,3,real,
     .                   mpi_min,
     .                   spmd_comm_world,ierror)
      x1 = tmpo(1)
      y1 = tmpo(2)
      z1 = tmpo(3)
C
      tmp1(1)=x2
      tmp1(2)=y2
      tmp1(3)=z2
      call mpi_allreduce(tmp1,tmpo,3,real,
     .                   mpi_max,
     .                   spmd_comm_world,ierror)
      x2 = tmpo(1)
      y2 = tmpo(2)
      z2 = tmpo(3)
 
C
#endif
      RETURN