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53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
#include "internal/bignum.h"
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static VALUE
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big(VALUE x)
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{
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if (FIXNUM_P(x))
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return rb_int2big(FIX2LONG(x));
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if (RB_TYPE_P(x, T_BIGNUM))
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return x;
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rb_raise(rb_eTypeError, "can't convert %s to Bignum",
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rb_obj_classname(x));
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}
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static VALUE
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big2str_generic(VALUE klass, VALUE x, VALUE vbase)
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{
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int base = NUM2INT(vbase);
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if (base < 2 || 36 < base)
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rb_raise(rb_eArgError, "invalid radix %d", base);
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return rb_big2str_generic(big(x), base);
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}
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#define POW2_P(x) (((x)&((x)-1))==0)
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static VALUE
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big2str_poweroftwo(VALUE klass, VALUE x, VALUE vbase)
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{
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int base = NUM2INT(vbase);
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if (base < 2 || 36 < base || !POW2_P(base))
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rb_raise(rb_eArgError, "invalid radix %d", base);
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return rb_big2str_poweroftwo(big(x), base);
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}
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#if defined(HAVE_LIBGMP) && defined(HAVE_GMP_H)
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static VALUE
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big2str_gmp(VALUE klass, VALUE x, VALUE vbase)
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{
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int base = NUM2INT(vbase);
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if (base < 2 || 36 < base)
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rb_raise(rb_eArgError, "invalid radix %d", base);
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return rb_big2str_gmp(big(x), base);
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}
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#else
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#define big2str_gmp rb_f_notimplement
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#endif
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void
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Init_big2str(VALUE klass)
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{
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rb_define_singleton_method(klass, "big2str_generic", big2str_generic, 2);
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rb_define_singleton_method(klass, "big2str_poweroftwo", big2str_poweroftwo, 2);
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rb_define_singleton_method(klass, "big2str_gmp", big2str_gmp, 2);
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}
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