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DAMASK_EICMD
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random seed should contain some entropy 

setting all elements to the same value does not make sense. Moreover,
negative values are allowed
This commit is contained in:
Martin Diehl 2022-01-17 07:41:17 +01:00
parent a545baebbf
commit c5fd6a3677
2 changed files with 15 additions and 19 deletions
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2
PRIVATE

@ -1 +1 @@
Subproject commit b898a8b5552bd9d1c555edc3d8134564dd32fe53 Subproject commit d570b4a1fac5b9b99d026d3ff9bf593615e22ce5

30
src/math.f90
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@ -84,38 +84,34 @@ contains
subroutine math_init subroutine math_init
real(pReal), dimension(4) :: randTest real(pReal), dimension(4) :: randTest
integer :: & integer :: randSize
randSize, & integer, dimension(:), allocatable :: seed
randomSeed !< fixed seeding for pseudo-random number generator, Default 0: use random seed
integer, dimension(:), allocatable :: randInit
class(tNode), pointer :: & class(tNode), pointer :: &
num_generic num_generic
print'(/,1x,a)', '<<<+- math init -+>>>'; flush(IO_STDOUT) print'(/,1x,a)', '<<<+- math init -+>>>'; flush(IO_STDOUT)
num_generic => config_numerics%get('generic',defaultVal=emptyDict) num_generic => config_numerics%get('generic',defaultVal=emptyDict)
randomSeed = num_generic%get_asInt('random_seed', defaultVal = 0)
call random_seed(size=randSize) call random_seed(size=randSize)
allocate(randInit(randSize)) allocate(seed(randSize))
if (randomSeed > 0) then
randInit = randomSeed if (num_generic%contains('random_seed')) then
seed = num_generic%get_as1dInt('random_seed',requiredSize=randSize)
else else
call random_seed() call random_seed()
call random_seed(get = randInit) call random_seed(get = seed)
randInit(2:randSize) = randInit(1) end if
endif
call random_seed(put = randInit) call random_seed(put = seed)
call random_number(randTest) call random_number(randTest)
print'(/,a,i2)', ' size of random seed: ', randSize print'(/,a,i2)', ' size of random seed: ', randSize
print'( a,i0)', ' value of random seed: ', randInit(1) print*, 'value of random seed: ', seed
print'( a,4(/,26x,f17.14),/)', ' start of random sequence: ', randTest print'( a,4(/,26x,f17.14))', ' start of random sequence: ', randTest
call random_seed(put = randInit) call selfTest()
call selfTest
end subroutine math_init end subroutine math_init