itoh.f90 Source File

!
!     (c) 2019 Guide Star Engineering, LLC
!     This Software was developed for the US Nuclear Regulatory Commission (US NRC)
!     under contract "Multi-Dimensional Physics Implementation into Fuel Analysis under
!     Steady-state and Transients (FAST)", contract # NRC-HQ-60-17-C-0007
!
!
!    NEMO - Numerical Engine (for) Multiphysics Operators
! Copyright (c) 2007, Stefano Toninel
!                     Gian Marco Bianchi  University of Bologna
!              David P. Schmidt    University of Massachusetts - Amherst
!              Salvatore Filippone University of Rome Tor Vergata
! All rights reserved.
!
! Redistribution and use in source and binary forms, with or without modification,
! are permitted provided that the following conditions are met:
!
!     1. Redistributions of source code must retain the above copyright notice,
!        this list of conditions and the following disclaimer.
!     2. Redistributions in binary form must reproduce the above copyright notice,
!        this list of conditions and the following disclaimer in the documentation
!        and/or other materials provided with the distribution.
!     3. Neither the name of the NEMO project nor the names of its contributors
!        may be used to endorse or promote products derived from this software
!        without specific prior written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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!---------------------------------------------------------------------------------

!!    Converts a positive integer into a string.
SUBMODULE(tools_output_basics) itoh_implementation
    IMPLICIT NONE

    CONTAINS

        MODULE PROCEDURE itoh
            USE class_psblas, ONLY : abort_psblas
            IMPLICIT NONE
            !
            INTEGER :: a, r
            INTEGER :: k

            IF(i < 0) THEN
                WRITE(*,100)
                CALL abort_psblas
            END IF

            itoh(:) = '0'

            k = max
            a = i
            DO
                r = MOD(a,10)
                a = a / 10
                itoh(k:k) = ACHAR(48+r)
                k = k - 1
                IF(k == 0) EXIT
            END DO

100     FORMAT(' ERROR! Negative integer argument in ITOH function')

        END PROCEDURE itoh

END SUBMODULE itoh_implementation