From: Jarkko Hietaniemi <jhi@alpha.hut.fi>
Date: Mon, 7 Oct 1996 19:03:00 +0000 (+0300)
Subject: LC_COLLATE.
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=1e2e1ae8d60a2653b0297f8d75f9d4fe5abfc82b;p=p5sagit%2Fp5-mst-13.2.git

LC_COLLATE.

Big patch to add, document, and test LC_COLLATE support.

ord() is a dangerous thing.
---

diff --git a/lib/Math/BigInt.pm b/lib/Math/BigInt.pm
index 68856ae..a4d8b6b 100644
--- a/lib/Math/BigInt.pm
+++ b/lib/Math/BigInt.pm
@@ -106,13 +106,23 @@ sub bcmp { #(num_str, num_str) return cond_code
 
 sub cmp { # post-normalized compare for internal use
     local($cx, $cy) = @_;
-    $cx cmp $cy
-    &&
-    (
-	ord($cy) <=> ord($cx)
-	||
-	($cx cmp ',') * (length($cy) <=> length($cx) || $cy cmp $cx)
-    );
+    
+    return 0 if ($cx eq $cy);
+
+    local($sx, $sy) = (substr($cx, 0, 1), substr($cy, 0, 1));
+    local($ld);
+
+    if ($sx eq '+') {
+      return  1 if ($sy eq '-' || $cy eq '+0');
+      $ld = length($cx) - length($cy);
+      return $ld if ($ld);
+      return $cx cmp $cy;
+    } else { # $sx eq '-'
+      return -1 if ($sy eq '+');
+      $ld = length($cy) - length($cx);
+      return $ld if ($ld);
+      return $cy cmp $cx;
+    }
 }
 
 sub badd { #(num_str, num_str) return num_str
diff --git a/lib/bigint.pl b/lib/bigint.pl
index e6ba644..a274736 100644
--- a/lib/bigint.pl
+++ b/lib/bigint.pl
@@ -103,13 +103,23 @@ sub main'bcmp { #(num_str, num_str) return cond_code
 
 sub cmp { # post-normalized compare for internal use
     local($cx, $cy) = @_;
-    $cx cmp $cy
-    &&
-    (
-	ord($cy) <=> ord($cx)
-	||
-	($cx cmp ',') * (length($cy) <=> length($cx) || $cy cmp $cx)
-    );
+    return 0 if ($cx eq $cy);
+
+    local($sx, $sy) = (substr($cx, 0, 1), substr($cy, 0, 1));
+    local($ld);
+
+    if ($sx eq '+') {
+      return  1 if ($sy eq '-' || $cy eq '+0');
+      $ld = length($cx) - length($cy);
+      return $ld if ($ld);
+      return $cx cmp $cy;
+    } else { # $sx eq '-'
+      return -1 if ($sy eq '+');
+      $ld = length($cy) - length($cx);
+      return $ld if ($ld);
+      return $cy cmp $cx;
+    }
+
 }
 
 sub main'badd { #(num_str, num_str) return num_str