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65 lines
1.6 KiB
C
65 lines
1.6 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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mul_normal(VALUE klass, VALUE x, VALUE y)
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{
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return rb_big_norm(rb_big_mul_normal(big(x), big(y)));
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}
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static VALUE
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sq_fast(VALUE klass, VALUE x)
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{
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return rb_big_norm(rb_big_sq_fast(big(x)));
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}
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static VALUE
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mul_balance(VALUE klass, VALUE x, VALUE y)
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{
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return rb_big_norm(rb_big_mul_balance(big(x), big(y)));
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}
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static VALUE
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mul_karatsuba(VALUE klass, VALUE x, VALUE y)
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{
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return rb_big_norm(rb_big_mul_karatsuba(big(x), big(y)));
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}
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static VALUE
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mul_toom3(VALUE klass, VALUE x, VALUE y)
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{
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return rb_big_norm(rb_big_mul_toom3(big(x), big(y)));
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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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mul_gmp(VALUE klass, VALUE x, VALUE y)
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{
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return rb_big_norm(rb_big_mul_gmp(big(x), big(y)));
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}
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#else
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#define mul_gmp rb_f_notimplement
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#endif
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void
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Init_mul(VALUE klass)
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{
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rb_define_const(klass, "SIZEOF_BDIGIT", INT2NUM(SIZEOF_BDIGIT));
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rb_define_const(klass, "BITSPERDIG", INT2NUM(SIZEOF_BDIGIT * CHAR_BIT));
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rb_define_singleton_method(klass, "big_mul_normal", mul_normal, 2);
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rb_define_singleton_method(klass, "big_sq_fast", sq_fast, 1);
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rb_define_singleton_method(klass, "big_mul_balance", mul_balance, 2);
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rb_define_singleton_method(klass, "big_mul_karatsuba", mul_karatsuba, 2);
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rb_define_singleton_method(klass, "big_mul_toom3", mul_toom3, 2);
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rb_define_singleton_method(klass, "big_mul_gmp", mul_gmp, 2);
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}
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