Aquila-Consortium/libsharp2
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first try, not working

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This commit is contained in:
Martin Reinecke 2019-01-08 15:36:59 +01:00
parent abf3b053d7
commit c89efbec62
3 changed files with 42 additions and 27 deletions
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19
libsharp/sharp_ylmgen_c.c
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@ -88,6 +88,8 @@ void sharp_Ylmgen_init (sharp_Ylmgen_C *gen, int l_max, int m_max, int spin)
{
gen->m=gen->mlo=gen->mhi=-1234567890;
ALLOC(gen->fx,sharp_ylmgen_dbl3,gen->lmax+3);
ALLOC(gen->alpha,double,gen->lmax+3);
ALLOC(gen->fxx,sharp_ylmgen_dbl2,gen->lmax+3);
for (int m=0; m<gen->lmax+3; ++m)
gen->fx[m].f[0]=gen->fx[m].f[1]=gen->fx[m].f[2]=0.;
ALLOC(gen->inv,double,gen->lmax+2);
@ -145,6 +147,8 @@ void sharp_Ylmgen_destroy (sharp_Ylmgen_C *gen)
else
{
DEALLOC(gen->fx);
DEALLOC(gen->alpha);
DEALLOC(gen->fxx);
DEALLOC(gen->prefac);
DEALLOC(gen->fscale);
DEALLOC(gen->flm1);
@ -199,6 +203,21 @@ void sharp_Ylmgen_prepare (sharp_Ylmgen_C *gen, int m)
*gen->flm2[l+gen->s]*gen->flm2[l-gen->s];
gen->fx[l+1].f[2]=t*l1*gen->inv[l];
}
// calculate alpha <=> index 3
gen->alpha[gen->mhi]=gen->alpha[gen->mhi+1]=1.;
for (int l=gen->mhi+2; l<gen->lmax; ++l)
{
gen->alpha[l] = gen->alpha[l-2]*gen->fx[l+1].f[2];
// printf("%d %e %e\n", l, gen->fx[l].f[2], gen->alpha[l]);
}
gen->fxx[gen->mhi].f[0] = 0;
gen->fxx[gen->mhi].f[0] = 0;
for (int l=gen->mhi+1; l<gen->lmax+1; ++l)
{
gen->fxx[l].f[0] = gen->fx[l].f[0]*gen->alpha[l-1]/gen->alpha[l];
gen->fxx[l].f[1] = gen->fx[l].f[1]*gen->fxx[l].f[0];
}
}
gen->preMinus_p = gen->preMinus_m = 0;