utils_vectors

Module

Description

This module contains utilities for manipulating vectors

and 3x3 matrices

References:

None

Owner:

Daniel Price

Runtime parameters:

None

Dependencies:

None

Quick access

Routines:

cross_product3d(), curl3d_epsijk(), det(), mag(), make_perp_frame(), matrixinvert3d(), minmaxave(), rotatevec(), unitvec()

Variables

Subroutines and functions

subroutine  vectorutils/minmaxave(x, xmin, xmax, xav, npts)

Parameters:

• x (npts) [real,in]

• xmin [real,out]

• xmax [real,out]

• xav [real,out]

• npts [integer,in,]

subroutine  vectorutils/cross_product3d(veca, vecb, vecc)

Parameters:

• veca (3) [real,in]

• vecb (3) [real,in]

• vecc (3) [real,out]

Called from:

get_total_angular_momentum(), get_centrifugal_force(), get_coriolis_force(), update_coriolis(), get_lense_thirring_force(), update_ltforce(), rotation_frame(), velocity_rotating_sink(), matrixinvert3d(), det()

subroutine  vectorutils/curl3d_epsijk(gradavec, curla)

Parameters:

• gradavec (3,3) [real,in]

• curla (3) [real,out]

subroutine  vectorutils/matrixinvert3d(a, ainv, ierr)

Parameters:

• a (3,3) [real,in]

• ainv (3,3) [real,out]

• ierr [integer,out]

Called from:

update_coriolis(), update_ltforce()

Call to:

cross_product3d()

function  vectorutils/det(a)

Parameters:

a (3,3) [real,in]

Return:

det [real]

Call to:

cross_product3d()

subroutine  vectorutils/rotatevec(u, v, theta)

Parameters:

• u (3) [real,inout]

• v (3) [real,in]

• theta [real,in]

function  vectorutils/unitvec(u)

Parameters:

u (3) [real,in]

Return:

uhat (3) [real]

function  vectorutils/mag(u)

Parameters:

u (3) [real,in]

Return:

umag [real]

subroutine  vectorutils/make_perp_frame(a, b, c)

Parameters:

• a (3) [real,in]

• b (3) [real,out]

• c (3) [real,out]