#873 .spiceinit does not allow setting random seed

[Andrew Sterian]

None of the options for setting the random seed in .spiceinit seem to work. The attached script prints a random resistance each time, despite three different ways of setting the random seed in .spiceinit:

option seed=1
setseed 1
set rndseed=1

With the above in .spiceinit in the current directory:

for i in 1 2 3 4 5 6 7 8 9 10 ; do ngspice -b spiceinit_fail.cir| fgrep resistance ; done
@r1[resistance] = 9.738833e+02
@r1[resistance] = 8.706737e+02
@r1[resistance] = 8.131219e+02
@r1[resistance] = 1.001660e+03
@r1[resistance] = 9.268301e+02
@r1[resistance] = 8.859511e+02
@r1[resistance] = 1.179932e+03
@r1[resistance] = 9.320947e+02
@r1[resistance] = 8.938548e+02
@r1[resistance] = 1.005027e+03

[Holger Vogt]

Thanks for the report.

This requires some major overhaul. I have some code ready, but it still needs a lot of testing.

[Holger Vogt]

I have pushed a fix to git development branch pre-master-48.

Please test.

[Andrew Sterian]

Looks like it works to set 'setseed N' in .spiceinit

Thanks!

[Munaut Sylvain]

The fix in git breaks "option klu" in .spiceinit
Before the commit, KLU is used. After the patch, SPARSE is used.

[Holger Vogt]

Another fix is pushed to git branch pre-master-48.