SHTINT

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DCL:MATH 2:SHTLIB: Spherical Harmonic Functions: Explanation of Subroutines

4.3.1 SHTINT

1.

Function

An initialization routine for SHTLIB. It must be called once before using any other subroutines in SHTLIB.

2.

Definition

See "Summary" for information on cut-of wavenumber M, EW partition number I, and NS partition number J.

3.

Call

SHTINT(MM,JM,IM,WORK)

4.

Explanation of Parameters

MM (I) Input parameter. Cut-off wavenumber (M).

JM (I) Input parameter. 1/2 of the NS partition number (J).

IM (I) Input parameter. 1/2 of the EW partition number (I).

WORK (R) Output parameter. Working area used by other routines in SHTLIB.

A 1-D array of length (JM+1)*(4*JM+5*MM+14)+(MM+1)*(MM+1)+MM+2+6*IM+15.

5.

Notes

(a): Must be JM≥(MM+1)/2 and IM≥MM+1.
(b): The contents of array WORK must not be changed while using SHTLIB .

`MM`	`(I)`	Input parameter. Cut-off wavenumber (M).
`JM`	`(I)`	Input parameter. 1/2 of the NS partition number (J).
`IM`	`(I)`	Input parameter. 1/2 of the EW partition number (I).
`WORK`	`(R)`	Output parameter. Working area used by other routines in SHTLIB.
		A 1-D array of length `(JM+1)(4JM+5MM+14)+(MM+1)(MM+1)+MM+2+6*IM+15`.