admin/mruby-mruby
1
0
Fork 0
mirror of https://github.com/mruby/mruby synced 2026-06-08 16:11:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

rational.c (rational_hash): generate hash code from rational numbers.

Browse Source
This commit is contained in:
Yukihiro "Matz" Matsumoto
2022-08-05 09:17:54 +09:00
parent 25f9d2f65a
commit 579379c517
1 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mrbgems/mruby-rational/src/rational.c
+10
View File
@@ -741,6 +741,15 @@ rational_pow(mrb_state *mrb, mrb_value x)
#endif
}
static mrb_value
rational_hash(mrb_state *mrb, mrb_value rat)
{
struct mrb_rational *r = rational_ptr(mrb, rat);
uint32_t hash = mrb_byte_hash((uint8_t*)&r->numerator, sizeof(mrb_int));
hash = mrb_byte_hash_step((uint8_t*)&r->denominator, sizeof(mrb_int), hash);
return mrb_int_value(mrb, hash);
}
void mrb_mruby_rational_gem_init(mrb_state *mrb)
{
struct RClass *rat;
@@ -766,6 +775,7 @@ void mrb_mruby_rational_gem_init(mrb_state *mrb)
mrb_define_method(mrb, rat, "/", rational_div, MRB_ARGS_REQ(1));
mrb_define_method(mrb, rat, "quo", rational_div, MRB_ARGS_REQ(1));
mrb_define_method(mrb, rat, "**", rational_pow, MRB_ARGS_REQ(1));
mrb_define_method(mrb, rat, "hash", rational_hash, MRB_ARGS_NONE());
mrb_define_method(mrb, mrb->integer_class, "to_r", fix_to_r, MRB_ARGS_NONE());
mrb_define_method(mrb, mrb->kernel_module, "Rational", rational_m, MRB_ARGS_ARG(1,1));
}