msg(3f) - [M_strings] converts any standard scalar type to a string (LICENSE:PD)
Synopsis
Description
Options
Returns
Examples
Author
License
function msg(g1,g2g3,g4,g5,g6,g7,g8,g9,nospace)class(*),intent(in),optional :: g1,g2,g3,g4,g5,g6,g7,g8,g9 logical,intent(in),optional :: nospace character,len=(:),allocatable :: msg
msg(3f) builds a space-separated string from up to nine scalar values.
g[1-9] optional value to print the value of after the message. May be of type INTEGER, LOGICAL, REAL, DOUBLEPRECISION, COMPLEX, or CHARACTER. nospace if nospace=.true., then no spaces are added between values
msg description to print
Sample program:Output
program demo_msg use M_strings, only : msg implicit none character(len=:),allocatable :: pr character(len=:),allocatable :: frmt integer :: biggestpr=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)),nospace=.true.) 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
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
John S. Urban
Public Domain
msg (3) | November 13, 2019 |