Re: Math::Big* v1.21

Message-Id: <200103311125.GAA377738@www08.hway.net>

p4raw-id: //depot/perl@9489

diff --git a/pod/perlop.pod b/pod/perlop.pod
index 8e4cddf..9cae3a2 100644 (file)
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -1902,7 +1902,7 @@ need yourself.
 
 The standard Math::BigInt and Math::BigFloat modules provide
 variable-precision arithmetic and overloaded operators, although
-they're currently pretty slow.  At the cost of some space and
+they're currently pretty slow. At the cost of some space and
 considerable speed, they avoid the normal pitfalls associated with
 limited-precision representations.
 
@@ -1912,8 +1912,25 @@ limited-precision representations.
 
     # prints +15241578780673678515622620750190521
 
-The non-standard modules SSLeay::BN and Math::Pari provide
-equivalent functionality (and much more) with a substantial
-performance savings.
+There are several modules that let you calculate with (bound only by
+memory and cpu-time) unlimited or fixed precision. There are also
+some non-standard modules that provide faster implementations via
+external C libraries.
+
+Here is a short, but incomplete summary:
+
+       Math::Fraction          big, unlimited fractions like 9973 / 12967
+       Math::String            treat string sequences like numbers
+       Math::FixedPrecision    calculate with a fixed precision
+       Math::Currency          for currency calculations
+       Bit::Vector             manipulate bit vectors fast (uses C)
+       Math::BigIntFast        Bit::Vector wrapper for big numbers
+       Math::Pari              provides access to the Pari C library
+       Math::BigInteger        uses an external C library
+       Math::Cephes            uses external Cephes C library (no big numbers)
+       Math::Cephes::Fraction  fractions via the Cephes library
+       Math::GMP               another one using an external C library
+
+Choose wisely.
 
 =cut