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`pvm, `

`pv`, `r`, `s`

[SOFA] Returns the modulus of pv-vector

, which must
have 2 elements in its first dimension and 3 in its second dimension.
In `pv`

is returned the modulus of the position component,
and in `r`

the modulus of the velocity component. The
output parameters get the same dimensions as `s`

, except
that the first two dimensions (equal to 2 and 3) are omitted.
`pv`