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C Library Functions  - wrt (3)

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NAME

wrt(3f) - [M_framework__msg] write multiple scalar values to any number of files (LICENSE:PD)

CONTENTS

Synopsis
Description
Options
Returns
Examples
Author
License

SYNOPSIS

subroutine wrt(luns,generic(s),iostat)

    integer,intent(in)           :: luns(:)
    class(*),intent(in),optional :: &
                    & generic0,generic1,generic2,generic3,generic4
    class(*),intent(in),optional :: &
                    & generic5,generic6,generic7,generic8,generic9
    class(*),intent(in),optional :: &
                    & generica,genericb,genericc,genericd,generice
    class(*),intent(in),optional :: &
                    & genericf,genericg,generich,generici,genericj
    integer,intent(out),optional :: iostat
    character(len=*),intent(in)  :: types(*)

DESCRIPTION

WRT(3f) writes a list of scalar values
	to the list of unit numbers in LUNS(:).

OPTIONS

LUNS	Unit numbers to write to. If of size zero no output is generated
generic[1-20]
	optional value to print the value of after the message. May be of type INTEGER, LOGICAL, REAL, DOUBLEPRECISION, COMPLEX, or CHARACTER.
TYPES	one for each lun. ’’ for ASCII, ’CSV’ for comma-separated.

RETURNS

IOSTAT	The value of the last non-zero IOSTAT value. Returns zero if no errors occurred.

EXAMPLES

Sample program:

   program demo_wrt
   use, intrinsic :: iso_fortran_env, only : &
    & stdin=>input_unit, &
    & stdout=>output_unit, &
    & stderr=>error_unit
   use M_framework__msg, only: wrt, fmt
   implicit none
   integer,allocatable :: luns(:)
   integer :: iostat=0
   integer,parameter :: ints(3)=[1,2,3]

   ! a null list allows for turning off verbose or debug mode output
   luns=[integer ::]
   call wrt(luns,’NULL LIST:’,huge(0),’PI=’,asin(1.0d0)*2.0d0,iostat=iostat)
   write(*,*)’IOSTAT=’,iostat

   ! multiple files can be used to create a log file, for example
   luns=[stderr,stdout]
   call wrt(luns,’TWO FILES:’,huge(0),’PI=’,asin(1.0d0)*2.0d0,iostat=iostat)
   write(*,*)’IOSTAT=’,iostat

   ! using fmt
   call wrt([stdout,stdout,stdout],’USING FMT :’, &
    & huge(0),’PI=’,asin(1.0d0)*2.0d0,fmt(ints(2),’i0.4’),iostat=iostat)

   end program demo_wrt

TWO FILES: 2147483647 PI= 3.1415926535897931 TWO FILES: 2147483647 PI= 3.1415926535897931

IOSTAT=
	USING FMT : 2147483647 PI= 3.1415926535897931 0002 USING FMT : 2147483647 PI= 3.1415926535897931 0002 USING FMT : 2147483647 PI= 3.1415926535897931 0002 IOSTAT=

AUTHOR

John S. Urban

LICENSE

Public Domain

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Nemo Release 3.1

wrt (3)

February 23, 2025

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