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Added nza again #141

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merged 4 commits into from
Nov 11, 2019
Merged

Added nza again #141

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d241925
Added nza again
whaeck Nov 7, 2019
6aa0f71
Updated release notes and release date
whaeck Nov 7, 2019
29a95ce
Fixed typo
whaeck Nov 7, 2019
79e80fa
FIxed typo in comment
whaeck Nov 7, 2019
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25 changes: 13 additions & 12 deletions src/acer.f90
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Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,7 @@ subroutine acer
! matd material to be processed
! tempd temperature desired (kelvin) (default=300)
! tname thermal zaid name ( 6 char max, def=za)
! nza number of moderator component za values (default=3, max=16)
! card 8a
! iza moderator component za values (up to a maximum of 16 values,
! must be terminated by /)
Expand Down Expand Up @@ -358,14 +359,22 @@ subroutine acer
else if (iopt.eq.2) then
tempd=300
tscr=' '
nza=16
read(nsysi,*) matd,tempd,tscr
nza=3
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I still don't like the default to be 3. While there wasn't an nza parameter previously, it was effectively defaulted to 1 as only 1 was required.

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This is to keep backwards compatible behaviour. If a user has an input like this:

    4025 296 'zrzrh' /
    40090 0 0 /

and we use nza=1 by default, then the last two zeros may be read as the next input (the mt numbers, number of bins, etc.). Setting nza by default equal to 3 solves this potential issue for old input.

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To provide a counter argument what if the old input is this:

4025 296 'lwtr' /
1001 /

I think providing a single ZA is more common (which is why it was the default).

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Why do we argue about this? It's a detail.

Anyway, in the case you bring up, the code will read it properly and reset nza to 1. Test 25 covers this behaviour and it passes with the current implementation.

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Ah, I didn't realize that it would read correctly (i.e., adding two extra zeros.) If that works, then we are good.

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I have to mimic the old implementation, in which these values were stored in three different variables and in which the second and third one were defaulted to zero (and that allows a user to add two zeros on the line). It's annoying but that's what it was before.

read(nsysi,*) matd,tempd,tscr,nza
nch=0
do i=1,6
if (tscr(i:i).ne.' ') nch=i
enddo
tname=' '
if (nch.gt.0) tname(7-nch:6)=tscr(1:nch)
write(nsyso,'(&
&'' mat to be processed .................. '',i10/&
&'' temperature .......................... '',1p,e10.3/&
&'' thermal name ......................... '',4x,a6)')&
matd,tempd,tname
if (nza.lt.1.or.nza.gt.16) then
call error('acer','between 1 and 16 za value must be given.',' ')
endif
do i=1,nza
izn(i)=0
enddo
Expand All @@ -377,17 +386,9 @@ subroutine acer
endif
enddo
write(nsyso,'(&
&'' mat to be processed .................. '',i10/&
&'' temperature .......................... '',1p,e10.3/&
&'' thermal name ......................... '',4x,a6/&
&'' number moderator component za values . '',i10)')&
matd,tempd,tname,nza
write(nsyso,'(&
&'' number moderator component za values . '',i10/&
&'' iza ................................ '',i10/&
&(40x,i10))') (izn(i),i=1,nza)
if (nza.eq.zero) then
call error('acer','at least one za value must be given.',' ')
endif
&(40x,i10))') nza,(izn(i),i=1,nza)
do i=1,nza
if (izn(i).le.zero) then
call error('acer','found invalid za numbers in izn.',' ')
Expand Down
3 changes: 1 addition & 2 deletions src/vers.f90
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Expand Up @@ -3,7 +3,6 @@ module version
! These values are updated during the NJOY revision-control process.
implicit none
private
character(8),public::vers='2016.52'
character(8),public::vers='2016.53'
character(8),public::vday='02Nov19'
end module version

2 changes: 1 addition & 1 deletion tests/49/input
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Expand Up @@ -27,7 +27,7 @@ acer
-31 -25 0 71 61
2 0 1 .80/
'Zr in ZrH at 296k ' /
4025 296 'zrzrh' /
4025 296 'zrzrh' 6 /
40090 40091 40092 40094 40096 /
227 80 228 0 1 1.00022 2/
stop