mirror of https://gitlab.com/QEF/q-e.git
62 lines
1.5 KiB
Fortran
62 lines
1.5 KiB
Fortran
!
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! Copyright (C) 2009 Quantum ESPRESSO groups
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! This file is distributed under the terms of the
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! GNU General Public License. See the file `License'
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! in the root directory of the present distribution,
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! or http://www.gnu.org/copyleft/gpl.txt .
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!
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!-----------------------------------------------------------------------
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FUNCTION int_to_char( i )
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!-----------------------------------------------------------------------
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!! Converts an integer number of up to 6 figures into a left-justifed
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!! character variable.
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!
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IMPLICIT NONE
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!
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INTEGER, INTENT(IN) :: i
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CHARACTER (LEN=6) :: int_to_char
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CHARACTER :: c
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INTEGER :: n, j, nc
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LOGICAL :: neg
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!
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nc = 6
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!
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IF( i < 0 ) then
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nc = nc - 1
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n = -i
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neg = .true.
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ELSE
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n = i
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neg = .false.
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END IF
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!
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j = 1
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DO WHILE( j <= nc )
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int_to_char(j:j) = CHAR( MOD( n, 10 ) + ICHAR( '0' ) )
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n = n / 10
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IF( n == 0 ) EXIT
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j = j + 1
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END DO
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!
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IF( j <= nc ) THEN
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DO n = 1, j/2
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c = int_to_char( n : n )
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int_to_char( n : n ) = int_to_char( j-n+1 : j-n+1 )
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int_to_char( j-n+1 : j-n+1 ) = c
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END DO
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IF( j < nc ) int_to_char(j+1:nc) = ' '
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ELSE
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int_to_char(:) = '*'
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END IF
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!
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IF( neg ) THEN
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DO n = nc+1, 2, -1
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int_to_char(n:n) = int_to_char(n-1:n-1)
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END DO
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int_to_char(1:1) = '-'
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END IF
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!
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RETURN
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!
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END FUNCTION int_to_char
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