X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fbigfloat.pl;h=032dfe6fb52b3227e05bd7f2cf3bdf2e4fd4b278;hb=4802d5d799ab971f97d7df94b7f1637c213350a8;hp=d687c784f1caef2135613d509969af7dad9153fb;hpb=afea815c58c54233979716dd5770b69df2df51f8;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/lib/bigfloat.pl b/lib/bigfloat.pl
index d687c78..032dfe6 100644
--- a/lib/bigfloat.pl
+++ b/lib/bigfloat.pl
@@ -6,7 +6,7 @@ require "bigint.pl";
 #
 # number format
 #   canonical strings have the form /[+-]\d+E[+-]\d+/
-#   Input values can have inbedded whitespace
+#   Input values can have embedded whitespace
 # Error returns
 #   'NaN'           An input parameter was "Not a Number" or 
 #                       divide by zero or sqrt of negative number
@@ -126,7 +126,7 @@ sub main'fdiv #(fnum_str, fnum_str[,scale]) return fnum_str
 	$scale = length($xm)-1 if (length($xm)-1 > $scale);
 	$scale = length($ym)-1 if (length($ym)-1 > $scale);
 	$scale = $scale + length($ym) - length($xm);
-	&norm(&round(&'bdiv($xm.('0' x $scale),$ym),$ym),
+	&norm(&round(&'bdiv($xm.('0' x $scale),$ym),&'babs($ym)),
 	    $xe-$ye-$scale);
     }
 }
@@ -186,7 +186,12 @@ sub main'ffround { #(fnum_str, scale) return fnum_str
 	    if ($xe < 1) {
 		'+0E+0';
 	    } elsif ($xe == 1) {
-		&norm(&round('+0',"+0".substr($xm,$[+1,1),"+10"), $scale);
+		# The first substr preserves the sign, which means that
+		# we'll pass a non-normalized "-0" to &round when rounding
+		# -0.006 (for example), purely so that &round won't lose
+		# the sign.
+		&norm(&round(substr($xm,$[,1).'0',
+		      "+0".substr($xm,$[+1,1),"+10"), $scale);
 	    } else {
 		&norm(&round(substr($xm,$[,$xe),
 		      "+0".substr($xm,$[+$xe,1),"+10"), $scale);