From 1132d84b00ad971e588dfa80efd6a8bd1d3471ca Mon Sep 17 00:00:00 2001 From: nobu Date: Mon, 10 Jun 2002 10:06:12 +0000 Subject: * numeric.c (fix_lshift): negative shift count means right shift. * numeric.c (fix_rshift): return -1 when left side operand is negative. * parse.y (yylex): `0_' should be an error. (ruby-bugs-ja:PR#239) git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@2535 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- numeric.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'numeric.c') diff --git a/numeric.c b/numeric.c index accd58113..6722ab0c9 100644 --- a/numeric.c +++ b/numeric.c @@ -1422,6 +1422,8 @@ fix_xor(x, y) return rb_int2inum(val); } +static VALUE fix_rshift _((VALUE, VALUE)); + static VALUE fix_lshift(x, y) VALUE x, y; @@ -1430,6 +1432,8 @@ fix_lshift(x, y) val = NUM2LONG(x); width = NUM2LONG(y); + if (width < 0) + return fix_rshift(x, INT2FIX(-width)); if (width > (sizeof(VALUE)*CHAR_BIT-1) || ((unsigned long)val)>>(sizeof(VALUE)*CHAR_BIT-1-width) > 0) { return rb_big_lshift(rb_int2big(val), y); @@ -1448,11 +1452,12 @@ fix_rshift(x, y) if (i < 0) return fix_lshift(x, INT2FIX(-i)); if (i == 0) return x; + val = FIX2LONG(x); if (i >= sizeof(long)*CHAR_BIT-1) { - if (i < 0) return INT2FIX(-1); + if (val < 0) return INT2FIX(-1); return INT2FIX(0); } - val = RSHIFT(FIX2LONG(x), i); + val = RSHIFT(val, i); return INT2FIX(val); } -- cgit