Multiple calls to g01euc or g01muc can be made following a single call to g01zuc, provided that rkappa or beta2 do not change, and that either all calls are to g01euc or all calls are to g01muc. If you wish to call both g01euc and g01muc, then you will need to initialize both separately.

4 References

Schorr B (1974) Programs for the Landau and the Vavilov distributions and the corresponding random numbers Comp. Phys. Comm. 7 215–224

5 Arguments

1: $rkappa$ – double Input: On entry: the argument $κ$ of the function.

Constraint: $0.01 \leq rkappa \leq 10.0$ .
2: $beta2$ – double Input: On entry: the argument $β^{2}$ of the function.

Constraint: $0.0 \leq beta2 \leq 1.0$ .
3: $mode$ – Integer Input: On entry: if $mode = 0$ , g01muc is to be called after the call to g01zuc. Otherwise, g01euc is to be called.
4: $xl$ – double * Output: On exit: $x_{l}$ , a threshold value below which $ϕ_{V} (λ; κ, β^{2})$ will be set to zero by g01muc and $Φ_{V} (λ; κ, β^{2})$ will be set to zero by g01euc if $λ < x_{l}$ .
5: $xu$ – double * Output: On exit: $x_{u}$ , a threshold value above which $ϕ_{V} (λ; κ, β^{2})$ will be set to zero by g01muc and $Φ_{V} (λ; κ, β^{2})$ will be set to unity by g01euc if $λ > x_{u}$ .
6: $comm_arr [322]$ – double Communication Array: On exit: this argument should be passed unchanged to g01euc or g01muc.
7: $fail$ – NagError * Input/Output: The NAG error argument (see Section 7 in the Introduction to the NAG Library CL Interface).

6 Error Indicators and Warnings

NE_ALLOC_FAIL: Dynamic memory allocation failed.
See Section 3.1.2 in the Introduction to the NAG Library CL Interface for further information.
NE_BAD_PARAM: On entry, argument $⟨ value ⟩$ had an illegal value.
NE_INTERNAL_ERROR: An internal error has occurred in this function. Check the function call and any array sizes. If the call is correct then please contact NAG for assistance.
See Section 7.5 in the Introduction to the NAG Library CL Interface for further information.
NE_NO_LICENCE: Your licence key may have expired or may not have been installed correctly.
See Section 8 in the Introduction to the NAG Library CL Interface for further information.
NE_REAL: On entry, $beta2 = ⟨ value ⟩$ .
Constraint: $beta2 \leq 1.0$ .

On entry, $beta2 = ⟨ value ⟩$ .
Constraint: $beta2 \geq 0.0$ .

On entry, $rkappa = ⟨ value ⟩$ .
Constraint: $rkappa \leq 10.0$ .

On entry, $rkappa = ⟨ value ⟩$ .
Constraint: $rkappa \geq 0.01$ .