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improved math_expand algorithm

This commit is contained in:
Zhuowen Zhao 2017-09-29 18:32:52 -04:00
parent f3292507b5
commit 80bed8b8aa
1 changed files with 5 additions and 6 deletions
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src/math.f90
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@ -74,6 +74,7 @@ module math
public :: &
math_init, &
math_qsort, &
math_expand, &
math_range, &
math_identity2nd, &
math_identity4th, &
@ -382,14 +383,12 @@ pure function math_expand(what,how)
real(pReal), dimension(:), intent(in) :: what
integer(pInt), dimension(:), intent(in) :: how
real(pReal), dimension(sum(how)) :: math_expand
integer(pInt) :: i,j,o
integer(pInt) :: i,o
o = 0_pInt
o = 1_pInt
do i = 1, size(how)
do j = 1, how(i)
o = o + 1_pInt
math_expand(o) = what(1+mod(i-1,size(what)))
enddo
math_expand(o:o+how(i)-1_pInt) = what(1+mod(i-1,size(what)))
o = o + how(i)
enddo
end function math_expand