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-rwxr-xr-xMaster/tlpkg/tlperl0/lib/Math/PariInit.pm57
1 files changed, 57 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl0/lib/Math/PariInit.pm b/Master/tlpkg/tlperl0/lib/Math/PariInit.pm
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+++ b/Master/tlpkg/tlperl0/lib/Math/PariInit.pm
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+package Math::Pari;
+
+my %shift = ( k => 10, K => 10, m => 20, M => 20, g => 30, G=> 30);
+
+sub _human2decimal {
+ local $_ = shift;
+ $_ <<= $shift{$1} if s/([kmg])$//i;
+ $_
+}
+
+sub Math::PariInit::import {
+ my $seen;
+ CORE::shift;
+ my @args = map {
+ /^:?(primes|stack)=(\d+((\.\d*)?[eE][-+]?\d+)?)[kKmMgG]?$/
+ ? do { ($1 eq 'primes' ? $initprimes : $initmem) = _human2decimal $2;
+ $seen++;
+ () }
+ : $_
+ } @_;
+ if ($seen && defined &Math::Pari::pari2iv) {
+ require Carp;
+ Carp::croak(
+ "Can't set primelimit and stack size after Math::Pari is loaded")
+ }
+ require Math::Pari;
+ @_ = ('Math::Pari', @args);
+ goto &Math::Pari::import;
+}
+
+1;
+
+=head1 NAME
+
+Math::PariInit - load C<Math::Pari> with specified $primelimit and $initmem.
+
+=head1 SYNOPSIS
+
+ use Math::PariInit qw(:DEFAULT :int primes=1.2e7 stack=1e7 prime)
+ $bigprime = prime(500000);
+
+=head1 DESCRIPTION
+
+C<use Math::PariInit> takes the same arguments as C<use Math::Pari>
+with the addition of C<:primes=I<limit>> and C<:stack=I<bytes>> which
+specify up to which number the initial list of primes should be
+precalculated, and how large should be the arena for PARI calculations.
+
+The arguments C<primes> and C<stack> cannot be specified if
+Math::Pari is already loaded.
+
+=head1 AUTHOR
+
+Ilya Zakharevich L<ilyaz@cpan.org>
+
+=cut
+