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#include <limits.h>
#include <mruby.h>
static inline mrb_int
to_int(mrb_state *mrb, mrb_value x)
{
x = mrb_to_int(mrb, x);
return mrb_fixnum(x);
}
/*
* Document-method: Integer#chr
* call-seq:
* int.chr -> string
*
* Returns a string containing the character represented by the +int+'s value
* according to +encoding+.
*
* 65.chr #=> "A"
* 230.chr #=> "\xE6"
*/
static mrb_value
mrb_int_chr(mrb_state *mrb, mrb_value x)
{
mrb_int chr;
char c;
chr = to_int(mrb, x);
if (chr >= (1 << CHAR_BIT)) {
mrb_raisef(mrb, E_RANGE_ERROR, "%S out of char range", x);
}
c = (char)chr;
return mrb_str_new(mrb, &c, 1);
}
/*
* call-seq:
* int.allbits?(mask) -> true or false
*
* Returns +true+ if all bits of <code>+int+ & +mask+</code> are 1.
*/
static mrb_value
mrb_int_allbits(mrb_state *mrb, mrb_value self)
{
mrb_int n, m;
mrb_get_args(mrb, "i", &m);
n = to_int(mrb, self);
return mrb_bool_value((n & m) == m);
}
/*
* call-seq:
* int.anybits?(mask) -> true or false
*
* Returns +true+ if any bits of <code>+int+ & +mask+</code> are 1.
*/
static mrb_value
mrb_int_anybits(mrb_state *mrb, mrb_value self)
{
mrb_int n, m;
mrb_get_args(mrb, "i", &m);
n = to_int(mrb, self);
return mrb_bool_value((n & m) != 0);
}
/*
* call-seq:
* int.nobits?(mask) -> true or false
*
* Returns +true+ if no bits of <code>+int+ & +mask+</code> are 1.
*/
static mrb_value
mrb_int_nobits(mrb_state *mrb, mrb_value self)
{
mrb_int n, m;
mrb_get_args(mrb, "i", &m);
n = to_int(mrb, self);
return mrb_bool_value((n & m) == 0);
}
void
mrb_mruby_numeric_ext_gem_init(mrb_state* mrb)
{
struct RClass *i = mrb_module_get(mrb, "Integral");
mrb_define_method(mrb, i, "chr", mrb_int_chr, MRB_ARGS_NONE());
mrb_define_method(mrb, i, "allbits?", mrb_int_allbits, MRB_ARGS_REQ(1));
mrb_define_method(mrb, i, "anybits?", mrb_int_anybits, MRB_ARGS_REQ(1));
mrb_define_method(mrb, i, "nobits?", mrb_int_nobits, MRB_ARGS_REQ(1));
}
void
mrb_mruby_numeric_ext_gem_final(mrb_state* mrb)
{
}
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