diff options
Diffstat (limited to 'mrbgems/mruby-rational/src/rational.c')
| -rw-r--r-- | mrbgems/mruby-rational/src/rational.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/mrbgems/mruby-rational/src/rational.c b/mrbgems/mruby-rational/src/rational.c index 07b93f9a6..71750410a 100644 --- a/mrbgems/mruby-rational/src/rational.c +++ b/mrbgems/mruby-rational/src/rational.c @@ -545,6 +545,48 @@ rational_mul(mrb_state *mrb, mrb_value x) mrb_int mrb_num_div_int(mrb_state *, mrb_int, mrb_int); +static mrb_value +rational_div(mrb_state *mrb, mrb_value x) +{ + struct mrb_rational *p1 = rational_ptr(mrb, x); + mrb_value y = mrb_get_arg1(mrb); + + switch (mrb_type(y)) { + case MRB_TT_INTEGER: + { + mrb_int z = mrb_integer(y); + if (mrb_int_mul_overflow(p1->denominator, z, &z)) rat_overflow(mrb); + return rational_new_i(mrb, p1->numerator, z); + } + case MRB_TT_RATIONAL: + { + struct mrb_rational *p2 = rational_ptr(mrb, y); + mrb_int a, b; + + if (mrb_int_mul_overflow(p1->numerator, p2->denominator, &a)) rat_overflow(mrb); + if (mrb_int_mul_overflow(p2->numerator, p1->denominator, &b)) rat_overflow(mrb); + return rational_new_i(mrb, a, b); + } + +#if defined(MRB_USE_COMPLEX) + case MRB_TT_COMPLEX: + x = mrb_complex_new(mrb, rat_to_flo(p1), 0); + return mrb_funcall_id(mrb, x, MRB_OPSYM(div), 1, y); +#endif + + default: +#ifndef MRB_NO_FLOAT + case MRB_TT_FLOAT: + { + mrb_float z = mrb_num_div_flo(mrb, p1->numerator, mrb_to_flo(mrb, y)); + return mrb_float_value(mrb, mrb_num_div_flo(mrb, z, (mrb_float)p1->denominator)); + } +#else + mrb_raise(mrb, E_TYPE_ERROR, "non integer division"); +#endif + } +} + /* 15.2.8.3.4 */ /* * redefine Integer#/ @@ -631,6 +673,8 @@ void mrb_mruby_rational_gem_init(mrb_state *mrb) mrb_define_method(mrb, rat, "+", rational_add, MRB_ARGS_REQ(1)); mrb_define_method(mrb, rat, "-", rational_sub, MRB_ARGS_REQ(1)); mrb_define_method(mrb, rat, "*", rational_mul, MRB_ARGS_REQ(1)); + 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, mrb->integer_class, "to_r", fix_to_r, MRB_ARGS_NONE()); mrb_define_method(mrb, mrb->integer_class, "/", int_div, MRB_ARGS_REQ(1)); /* overrride */ mrb_define_method(mrb, mrb->integer_class, "quo", int_quo, MRB_ARGS_REQ(1)); /* overrride */ |