Upgrage to bignum-0.21 and Math-BigRat-0.19

[p5sagit/p5-mst-13.2.git] / lib / bigrat.pm

diff --git a/lib/bigrat.pm b/lib/bigrat.pm
index f326e23..a7a2c43 100644 (file)
--- a/lib/bigrat.pm
+++ b/lib/bigrat.pm
@@ -1,7 +1,7 @@
 package bigrat;
 use 5.006002;
 
-$VERSION = '0.09';
+$VERSION = '0.10';
 require Exporter;
 @ISA           = qw( Exporter );
 @EXPORT_OK     = qw( ); 
@@ -80,7 +80,7 @@ sub import
   # see also bignum->import() for additional comments
 
   # some defaults
-  my $lib = ''; my $upgrade = 'Math::BigFloat';
+  my $lib = ''; my $lib_kind = 'try'; my $upgrade = 'Math::BigFloat';
 
   my @import = ( ':constant' );                                # drive it w/ constant
   my @a = @_; my $l = scalar @_; my $j = 0;
@@ -95,9 +95,10 @@ sub import
       my $s = 2; $s = 1 if @a-$j < 2;  # avoid "can not modify non-existant..."
       splice @a, $j, $s; $j -= $s;
       }
-    elsif ($_[$i] =~ /^(l|lib)$/)
+    elsif ($_[$i] =~ /^(l|lib|try|only)$/)
       {
       # this causes a different low lib to take care...
+      $lib_kind = $1; $lib_kind = 'lib' if $lib_kind eq 'l';
       $lib = $_[$i+1] || '';
       my $s = 2; $s = 1 if @a-$j < 2;  # avoid "can not modify non-existant..."
       splice @a, $j, $s; $j -= $s; $i++;
@@ -152,7 +153,7 @@ sub import
     require Math::BigInt if $_lite == 0;        # not already loaded?
     $class = 'Math::BigInt';                    # regardless of MBIL or not
     }
-  push @import, 'lib' => $lib if $lib ne '';
+  push @import, $lib_kind => $lib if $lib ne ''; 
   # Math::BigInt::Trace or plain Math::BigInt
   $class->import(@import, upgrade => $upgrade);
 
@@ -229,13 +230,23 @@ Math::BigInt::Calc. This is equivalent to saying:
 
 You can change this by using:
 
-       use bigrat lib => 'BitVect';
+        use bignum lib => 'GMP';
 
 The following would first try to find Math::BigInt::Foo, then
 Math::BigInt::Bar, and when this also fails, revert to Math::BigInt::Calc:
 
        use bigrat lib => 'Foo,Math::BigInt::Bar';
 
+Using C<lib> warns if none of the specified libraries can be found and
+L<Math::BigInt> did fall back to one of the default libraries.
+To supress this warning, use C<try> instead:
+
+        use bignum try => 'GMP';
+
+If you want the code to die instead of falling back, use C<only> instead:
+
+        use bignum only => 'GMP';
+
 Please see respective module documentation for further details.
 
 =head2 Sign