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Test for SCM_HAVE_T_UINT64 instead of

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SCM_HAVE_T_INT64.
(scm_i_uniform32, scm_i_uniform32, scm_i_init_rstate): Use
scm_t_uint64 and scm_t_uint32 instead of scm_t_int64 and
scm_t_int32.
This commit is contained in:
Mikael Djurfeldt 2006-02-19 16:34:51 +00:00
parent 4c7016dc06
commit 4a9f83ff06
2 changed files with 19 additions and 11 deletions
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8
libguile/ChangeLog
View file

@ -1,3 +1,11 @@
2006-02-19 Mikael Djurfeldt <mdj@neurologic.cc>
* random.c: Test for SCM_HAVE_T_UINT64 instead of
SCM_HAVE_T_INT64.
(scm_i_uniform32, scm_i_uniform32, scm_i_init_rstate): Use
scm_t_uint64 and scm_t_uint32 instead of scm_t_int64 and
scm_t_int32.
2006-01-04 Ludovic Court<E8>s <ludovic.courtes@laas.fr>
* gc-segment.c (scm_i_sweep_some_cards): Take a SWEEP_STATS

22
libguile/random.c
View file

@ -75,13 +75,13 @@ scm_t_rng scm_the_rng;
#define M_PI 3.14159265359
#endif
#if SCM_HAVE_T_INT64
#if SCM_HAVE_T_UINT64
unsigned long
scm_i_uniform32 (scm_t_i_rstate *state)
{
scm_t_int64 x = (scm_t_int64) A * state->w + state->c;
scm_t_int32 w = x & 0xffffffffUL;
scm_t_uint64 x = (scm_t_uint64) A * state->w + state->c;
scm_t_uint32 w = x & 0xffffffffUL;
state->w = w;
state->c = x >> 32L;
return w;
@ -106,12 +106,12 @@ scm_i_uniform32 (scm_t_i_rstate *state)
unsigned long
scm_i_uniform32 (scm_t_i_rstate *state)
{
scm_t_int32 x1 = L (A) * L (state->w);
scm_t_int32 x2 = L (A) * H (state->w);
scm_t_int32 x3 = H (A) * L (state->w);
scm_t_int32 w = L (x1) + L (state->c);
scm_t_int32 m = H (x1) + L (x2) + L (x3) + H (state->c) + H (w);
scm_t_int32 x4 = H (A) * H (state->w);
scm_t_uint32 x1 = L (A) * L (state->w);
scm_t_uint32 x2 = L (A) * H (state->w);
scm_t_uint32 x3 = H (A) * L (state->w);
scm_t_uint32 w = L (x1) + L (state->c);
scm_t_uint32 m = H (x1) + L (x2) + L (x3) + H (state->c) + H (w);
scm_t_uint32 x4 = H (A) * H (state->w);
state->w = w = (L (m) << 16) + L (w);
state->c = H (x2) + H (x3) + x4 + H (m);
return w;
@ -122,8 +122,8 @@ scm_i_uniform32 (scm_t_i_rstate *state)
void
scm_i_init_rstate (scm_t_i_rstate *state, const char *seed, int n)
{
scm_t_int32 w = 0L;
scm_t_int32 c = 0L;
scm_t_uint32 w = 0L;
scm_t_uint32 c = 0L;
int i, m;
for (i = 0; i < n; ++i)
{