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Remove double indirection in array-map! with <2 args

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* libguile/array-map.c: (ramap): factor GVSET/GVREF out of rank-1 loop
  for ra0 and the first element of ras.
This commit is contained in:
Daniel Llorens 2013-04-02 15:53:22 +02:00 • committed by Ludovic Courtès
parent 9a68d7b388
commit 51a1763f65
1 changed files with 20 additions and 12 deletions
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30
libguile/array-map.c
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@ -644,25 +644,31 @@ static int
ramap (SCM ra0, SCM proc, SCM ras)
{
ssize_t i = SCM_I_ARRAY_DIMS (ra0)->lbnd;
size_t n = SCM_I_ARRAY_DIMS (ra0)->ubnd - i + 1;
size_t i0 = SCM_I_ARRAY_BASE (ra0);
ssize_t inc0 = SCM_I_ARRAY_DIMS (ra0)->inc;
size_t n = SCM_I_ARRAY_DIMS (ra0)->ubnd - SCM_I_ARRAY_DIMS (ra0)->lbnd + 1;
size_t i0end = i0 + n*inc0;
ra0 = SCM_I_ARRAY_V (ra0);
scm_t_array_handle h0;
size_t i0, i0end;
ssize_t inc0;
scm_generalized_vector_get_handle (SCM_I_ARRAY_V (ra0), &h0);
i0 = h0.base + h0.dims[0].lbnd + SCM_I_ARRAY_BASE (ra0)*h0.dims[0].inc;
inc0 = SCM_I_ARRAY_DIMS (ra0)->inc * h0.dims[0].inc;
i0end = i0 + n*inc0;
if (scm_is_null (ras))
for (; i0 < i0end; i0 += inc0)
GVSET (ra0, i0, scm_call_0 (proc));
h0.impl->vset (&h0, i0, scm_call_0 (proc));
else
{
SCM ra1 = SCM_CAR (ras);
size_t i1 = SCM_I_ARRAY_BASE (ra1);
ssize_t inc1 = SCM_I_ARRAY_DIMS (ra1)->inc;
ra1 = SCM_I_ARRAY_V (ra1);
scm_t_array_handle h1;
size_t i1;
ssize_t inc1;
scm_generalized_vector_get_handle (SCM_I_ARRAY_V (ra1), &h1);
i1 = h1.base + h1.dims[0].lbnd + SCM_I_ARRAY_BASE (ra1)*h1.dims[0].inc;
inc1 = SCM_I_ARRAY_DIMS (ra1)->inc * h1.dims[0].inc;
ras = SCM_CDR (ras);
if (scm_is_null (ras))
for (; i0 < i0end; i0 += inc0, i1 += inc1)
GVSET (ra0, i0, scm_call_1 (proc, GVREF (ra1, i1)));
h0.impl->vset (&h0, i0, scm_call_1 (proc, h1.impl->vref (&h1, i1)));
else
{
ras = scm_vector (ras);
@ -672,10 +678,12 @@ ramap (SCM ra0, SCM proc, SCM ras)
unsigned long k;
for (k = scm_c_vector_length (ras); k--;)
args = scm_cons (GVREF (scm_c_vector_ref (ras, k), i), args);
GVSET (ra0, i0, scm_apply_1 (proc, GVREF (ra1, i1), args));
h0.impl->vset (&h0, i0, scm_apply_1 (proc, h1.impl->vref (&h1, i1), args));
}
}
scm_array_handle_release (&h1);
}
scm_array_handle_release (&h0);
return 1;
}