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random-source-pseudo-randomize! takes two seed arguments.

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Fixes issue #219.
This commit is contained in:
Alex Shinn 2014-05-14 21:08:11 +09:00
parent b24ce3293e
commit d0155f4bf2
1 changed files with 7 additions and 5 deletions
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12
lib/srfi/27/rand.c
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@ -158,12 +158,14 @@ static sexp sexp_random_source_randomize (sexp ctx, sexp self, sexp_sint_t n, se
return SEXP_VOID; return SEXP_VOID;
} }
static sexp sexp_random_source_pseudo_randomize (sexp ctx, sexp self, sexp_sint_t n, sexp rs, sexp seed) { static sexp sexp_random_source_pseudo_randomize (sexp ctx, sexp self, sexp_sint_t n, sexp rs, sexp seed1, sexp seed2) {
if (! sexp_random_source_p(rs)) if (! sexp_random_source_p(rs))
return sexp_type_exception(ctx, self, rs_type_id, rs); return sexp_type_exception(ctx, self, rs_type_id, rs);
if (! sexp_fixnump(seed)) if (! sexp_fixnump(seed1))
return sexp_type_exception(ctx, self, rs_type_id, seed); return sexp_type_exception(ctx, self, rs_type_id, seed1);
sexp_seed_random(sexp_unbox_fixnum(seed), rs); if (! sexp_fixnump(seed2))
return sexp_type_exception(ctx, self, rs_type_id, seed2);
sexp_seed_random(sexp_unbox_fixnum(seed1) ^ sexp_unbox_fixnum(seed2), rs);
return SEXP_VOID; return SEXP_VOID;
} }
@ -197,7 +199,7 @@ sexp sexp_init_library (sexp ctx, sexp self, sexp_sint_t n, sexp env, const char
sexp_define_foreign(ctx, env, "random-source-state-ref", 1, sexp_random_source_state_ref); sexp_define_foreign(ctx, env, "random-source-state-ref", 1, sexp_random_source_state_ref);
sexp_define_foreign(ctx, env, "random-source-state-set!", 2, sexp_random_source_state_set); sexp_define_foreign(ctx, env, "random-source-state-set!", 2, sexp_random_source_state_set);
sexp_define_foreign(ctx, env, "random-source-randomize!", 1, sexp_random_source_randomize); sexp_define_foreign(ctx, env, "random-source-randomize!", 1, sexp_random_source_randomize);
sexp_define_foreign(ctx, env, "random-source-pseudo-randomize!", 2, sexp_random_source_pseudo_randomize); sexp_define_foreign(ctx, env, "random-source-pseudo-randomize!", 3, sexp_random_source_pseudo_randomize);
default_random_source = op = sexp_make_random_source(ctx, NULL, 0); default_random_source = op = sexp_make_random_source(ctx, NULL, 0);
name = sexp_intern(ctx, "default-random-source", -1); name = sexp_intern(ctx, "default-random-source", -1);