blob: ed780673655cacccc8e59ea6d1418e5be59d34cf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
MODULE spherical_harmonics
INTEGER, PARAMETER :: dp = SELECTED_REAL_KIND ( 14, 200 )
CONTAINS
FUNCTION dlegendre (x, l, m) RESULT (dplm)
SELECT CASE ( l )
CASE ( 0 )
dplm = 0.0_dp
CASE ( 1 )
dplm = 1.0_dp
CASE DEFAULT
IF ( mm > 0 ) THEN
dpmm = -m
DO im = 1, mm
dpmm = -dpmm
END DO
IF ( l == mm + 1 ) THEN
DO il = mm + 2, l
dpll = dpmm
END DO
dplm = dpll
END IF
END IF
END SELECT
END FUNCTION dlegendre
END MODULE spherical_harmonics
! { dg-final { cleanup-modules "spherical_harmonics" } }
|
