From 77f245e62ee7e0bbfd1eb868b759dabe169a29bf Mon Sep 17 00:00:00 2001 From: akr Date: Sun, 1 Sep 2013 01:31:16 +0000 Subject: * numeric.c (rb_fix_bit_length): Moved from bignum.c. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42752 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- bignum.c | 41 ----------------------------------------- 1 file changed, 41 deletions(-) (limited to 'bignum.c') diff --git a/bignum.c b/bignum.c index 6c65cae40e..8c1bb607b0 100644 --- a/bignum.c +++ b/bignum.c @@ -6606,45 +6606,6 @@ rb_big_bit_length(VALUE big) INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_NATIVE_BYTE_ORDER); } -/* - * call-seq: - * int.bit_length -> integer - * - * Returns the number of bits of the value of int. - * - * "the number of bits" means that - * the bit position of the highest bit which is different to the sign bit. - * (The bit position of the bit 2**n is n+1.) - * If there is no such bit (zero or minus one), zero is returned. - * - * I.e. This method returns ceil(log2(int < 0 ? -int : int+1)). - * - * (-2**12-1).bit_length #=> 13 - * (-2**12).bit_length #=> 12 - * (-2**12+1).bit_length #=> 12 - * -0x101.bit_length #=> 9 - * -0x100.bit_length #=> 8 - * -0xff.bit_length #=> 8 - * -2.bit_length #=> 1 - * -1.bit_length #=> 0 - * 0.bit_length #=> 0 - * 1.bit_length #=> 1 - * 0xff.bit_length #=> 8 - * 0x100.bit_length #=> 9 - * (2**12-1).bit_length #=> 12 - * (2**12).bit_length #=> 13 - * (2**12+1).bit_length #=> 13 - */ - -static VALUE -rb_fix_bit_length(VALUE fix) -{ - long v = FIX2LONG(fix); - if (v < 0) - v = ~v; - return LONG2FIX(bit_length(v)); -} - /* * call-seq: * big.odd? -> true or false @@ -6740,7 +6701,5 @@ Init_Bignum(void) rb_define_method(rb_cBignum, "odd?", rb_big_odd_p, 0); rb_define_method(rb_cBignum, "even?", rb_big_even_p, 0); - rb_define_method(rb_cFixnum, "bit_length", rb_fix_bit_length, 0); - power_cache_init(); } -- cgit v1.2.3