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random.c: prefer rb_check_arity

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* random.c: use rb_check_arity instead of rb_scan_args for simple
  optional arguments.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54929 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-05-06 06:52:36 +00:00
parent c92c82184c
commit 0e303494d0
1 changed files with 6 additions and 6 deletions
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12
random.c
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@ -426,12 +426,12 @@ random_init(int argc, VALUE *argv, VALUE obj)
VALUE vseed; VALUE vseed;
rb_random_t *rnd = get_rnd(obj); rb_random_t *rnd = get_rnd(obj);
if (argc == 0) { if (rb_check_arity(argc, 0, 1) == 0) {
rb_check_frozen(obj); rb_check_frozen(obj);
vseed = random_seed(); vseed = random_seed();
} }
else { else {
rb_scan_args(argc, argv, "01", &vseed); vseed = argv[0];
rb_check_copyable(obj, vseed); rb_check_copyable(obj, vseed);
} }
rnd->seed = rand_init(&rnd->mt, vseed); rnd->seed = rand_init(&rnd->mt, vseed);
@ -793,11 +793,11 @@ rb_f_srand(int argc, VALUE *argv, VALUE obj)
VALUE seed, old; VALUE seed, old;
rb_random_t *r = &default_rand; rb_random_t *r = &default_rand;
if (argc == 0) { if (rb_check_arity(argc, 0, 1) == 0) {
seed = random_seed(); seed = random_seed();
} }
else { else {
rb_scan_args(argc, argv, "01", &seed); seed = argv[0];
} }
old = r->seed; old = r->seed;
r->seed = rand_init(&r->mt, seed); r->seed = rand_init(&r->mt, seed);
@ -1407,8 +1407,8 @@ rb_f_rand(int argc, VALUE *argv, VALUE obj)
VALUE v, vmax, r; VALUE v, vmax, r;
rb_random_t *rnd = rand_start(&default_rand); rb_random_t *rnd = rand_start(&default_rand);
if (argc == 0) goto zero_arg; if (rb_check_arity(argc, 0, 1) == 0) goto zero_arg;
rb_scan_args(argc, argv, "01", &vmax); vmax = argv[0];
if (NIL_P(vmax)) goto zero_arg; if (NIL_P(vmax)) goto zero_arg;
if ((v = rand_range(Qnil, rnd, vmax)) != Qfalse) { if ((v = rand_range(Qnil, rnd, vmax)) != Qfalse) {
return v; return v;