Defining Invariant mass in "kin_func.f" file

Hi,

I did not.
Probably an historical reason since (I guess) mij was define before SumDot which is more general.
In any case this is not a problem to have multiple definition of the same stuff and this is inevitable in such large code with that many developers.

Cheers,

Olivier

> On Dec 4, 2015, at 12:12, shibasipu <email address hidden> wrote:
>
> Question #276662 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/276662
>
> Description changed to:
> Dear Olivier,
> Could you please tell why you have defined invariant mass for two particles in two places in "kin_func.f" ? Is there any specific reason ?
>
> In First Place
> ============================
>
> . double precision function mij(P1,P2)
> c************************************************************************
> c Invarient mass of 2 particles
> c************************************************************************
> IMPLICIT NONE
> double precision p1(0:3),p2(0:3)
> double precision sumdot
> external sumdot
>
> mij = dsqrt(max(Sumdot(p1,p2,1d0),0d0))
>
> RETURN
> END
>
> 2. In Second Place
> =============================
> double precision function SumDot(P1,P2,dsign)
> c************************************************************************
> c Invarient mass of 2 particles
> c************************************************************************
> IMPLICIT NONE
> double precision p1(0:3),p2(0:3),dsign
> integer i
> double precision ptot(0:3)
> double precision dot
> external dot
>
> do i=0,3
> ptot(i)=p1(i)+dsign*p2(i)
> enddo
> SumDot = dot(ptot,ptot)
>
> RETURN
> END
>
> --
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