V3FIT
VMEC2000
Sources
Splines
sort_data.f
1
SUBROUTINE
sort_data (x, index_array, n)
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USE
stel_kinds
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IMPLICIT NONE
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C-----------------------------------------------
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C D u m m y A r g u m e n t s
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c-----------------------------------------------
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INTEGER
n
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INTEGER
,
DIMENSION(n)
:: index_array
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REAL
(rprec),
DIMENSION(n)
:: x
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C-----------------------------------------------
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C L o c a l V a r i a b l e s
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C-----------------------------------------------
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INTEGER
:: i, j
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INTEGER
,
DIMENSION(1)
:: isamax
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REAL
(rprec),
DIMENSION(n)
:: dumx
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C-----------------------------------------------
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!
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! RETURNS INDEX(I) ARRAY, SO THAT X(INDEX(I)) IS SORTED, I=1,N
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! RETURNS Xin(INDEX(I)) = Xout(I)
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!
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DO
i = n, 1, -1
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isamax = maxloc(abs(x))
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j = isamax(1)
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dumx(i) = x(j)
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x(j) = 0.
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index_array(i) = j
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END DO
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x = dumx
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END SUBROUTINE
sort_data
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