msg Interface

public interface msg

Contents

Module Procedures


Module Procedures

private function msg_scalar(generic1, generic2, generic3, generic4, generic5, generic6, generic7, generic8, generic9, sep)

NAME

 msg(3f) - [M_strings:TYPE] converts any standard scalar type to a string
 (LICENSE:PD)

SYNOPSIS

 function msg(g1,g2g3,g4,g5,g6,g7,g8,g9,sep)

  class(*),intent(in),optional  :: g1,g2,g3,g4,g5,g6,g7,g8,g9
  character(len=*),intent(in),optional :: sep
  character(len=:),allocatable :: msg

DESCRIPTION

 msg(3f) builds a space-separated string from up to nine scalar values.

OPTIONS

 g[1-9]  optional value to print the value of after the message. May
         be of type INTEGER, LOGICAL, REAL, DOUBLEPRECISION, COMPLEX,
         or CHARACTER.
 sep     separator between values. Defaults to a space

RETURNS

 msg     description to print

EXAMPLES

Sample program:

    program demo_msg
    use M_strings, only : msg
    implicit none
    character(len=:),allocatable :: pr
    character(len=:),allocatable :: frmt
    integer                      :: biggest

    pr=msg('HUGE(3f) integers',huge(0),&
    & 'and real',huge(0.0),'and double',huge(0.0d0))
    write(*,'(a)')pr
    pr=msg('real            :',&
     & huge(0.0),0.0,12345.6789,tiny(0.0) )
    write(*,'(a)')pr
    pr=msg('doubleprecision :',&
     & huge(0.0d0),0.0d0,12345.6789d0,tiny(0.0d0) )
    write(*,'(a)')pr
    pr=msg('complex         :',&
     & cmplx(huge(0.0),tiny(0.0)) )
    write(*,'(a)')pr

    ! create a format on the fly
    biggest=huge(0)
    frmt=msg('(*(i',int(log10(real(biggest))),':,1x))',sep='')
    write(*,*)'format=',frmt

    ! although it will often work, using msg(3f) in an I/O statement
    ! is not recommended
    write(*,*)msg('program will now stop')

    end program demo_msg

Output

   HUGE(3f) integers 2147483647 and real 3.40282347E+38
   and double 1.7976931348623157E+308
   real            : 3.40282347E+38 0.00000000
   12345.6787 1.17549435E-38
   doubleprecision : 1.7976931348623157E+308 0.0000000000000000
   12345.678900000001 2.2250738585072014E-308
   complex         : (3.40282347E+38,1.17549435E-38)
    format=(*(i9:,1x))
    program will now stop

AUTHOR

John S. Urban

LICENSE

Public Domain

Arguments

Type IntentOptional Attributes Name
class(*), intent(in), optional :: generic1
class(*), intent(in), optional :: generic2
class(*), intent(in), optional :: generic3
class(*), intent(in), optional :: generic4
class(*), intent(in), optional :: generic5
class(*), intent(in), optional :: generic6
class(*), intent(in), optional :: generic7
class(*), intent(in), optional :: generic8
class(*), intent(in), optional :: generic9
character(len=*), intent(in), optional :: sep

Return Value character(len=:), allocatable

private function msg_one(generic1, generic2, generic3, generic4, generic5, generic6, generic7, generic8, generic9, sep)

Arguments

Type IntentOptional Attributes Name
class(*), intent(in) :: generic1(:)
class(*), intent(in), optional :: generic2(:)
class(*), intent(in), optional :: generic3(:)
class(*), intent(in), optional :: generic4(:)
class(*), intent(in), optional :: generic5(:)
class(*), intent(in), optional :: generic6(:)
class(*), intent(in), optional :: generic7(:)
class(*), intent(in), optional :: generic8(:)
class(*), intent(in), optional :: generic9(:)
character(len=*), intent(in), optional :: sep

Return Value character(len=:), allocatable