Gecko [ klinikpearlcity.com ]

Name	Size	Permission	Date
App	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Archive	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
B	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Bundle	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Business	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
CGI	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
CPAN	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
CPANPLUS	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Carp	[ DIR ]	drwxr-xr-x	2020-06-12 07:58
DBIx	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Date	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Devel	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Digest	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Encode	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Error	[ DIR ]	drwxr-xr-x	2020-06-12 11:14
Exporter	[ DIR ]	drwxr-xr-x	2020-06-12 07:58
ExtUtils	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
File	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Getopt	[ DIR ]	drwxr-xr-x	2020-06-12 07:58
Git	[ DIR ]	drwxr-xr-x	2026-05-04 10:31
HTML	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
HTTP	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
IO	[ DIR ]	drwxr-xr-x	2018-04-10 23:52
IPC	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
JSON	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
LWP	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Locale	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Log	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Module	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Mozilla	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Net	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
POD2	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Params	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Parse	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Perl	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Perl4	[ DIR ]	drwxr-xr-x	2020-06-13 04:32
Pod	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
RPC	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
TAP	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Term	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Test	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Text	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
Thread	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Time	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
Try	[ DIR ]	drwxr-xr-x	2022-03-29 18:18
Version	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
WWW	[ DIR ]	drwxr-xr-x	2020-06-12 11:05
autodie	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
inc	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
lib	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
local	[ DIR ]	drwxr-xr-x	2020-06-12 11:13
CGI.pm	255.24 KB	-rw-r--r--	2012-11-14 23:42
CPANPLUS.pm	7.05 KB	-rw-r--r--	2013-05-20 21:46
Carp.pm	19.93 KB	-rw-r--r--	2012-06-18 11:32
Digest.pm	10.35 KB	-rw-r--r--	2011-10-02 10:06
Env.pm	5.39 KB	-rw-r--r--	2013-03-02 17:10
Error.pm	24.27 KB	-rw-r--r--	2014-06-09 20:19
Exporter.pm	18.31 KB	-rw-r--r--	2013-03-27 15:34
Fatal.pm	45.16 KB	-rw-r--r--	2013-02-22 14:49
Git.pm	42.55 KB	-r--r--r--	2013-06-10 20:01
abbrev.pl	819 B	-rw-r--r--	2017-06-13 23:38
assert.pl	1.27 KB	-rw-r--r--	2017-06-13 23:38
autodie.pm	11.83 KB	-rw-r--r--	2013-02-22 14:49
bigfloat.pl	7.14 KB	-rw-r--r--	2017-06-13 23:38
bigint.pl	8.71 KB	-rw-r--r--	2017-06-13 23:38
bigrat.pl	4.35 KB	-rw-r--r--	2017-06-13 23:38
cacheout.pl	1.1 KB	-rw-r--r--	2017-06-13 23:38
chat2.pl	9.73 KB	-rw-r--r--	2017-06-13 23:38
complete.pl	3.12 KB	-rw-r--r--	2017-06-13 23:38
constant.pm	13.04 KB	-rw-r--r--	2014-06-10 02:51
ctime.pl	1.93 KB	-rw-r--r--	2017-06-13 23:38
dotsh.pl	2.12 KB	-rw-r--r--	2017-06-13 23:38
exceptions.pl	1.7 KB	-rw-r--r--	2017-06-13 23:38
fastcwd.pl	1019 B	-rw-r--r--	2017-06-13 23:38
find.pl	1.16 KB	-rw-r--r--	2017-06-13 23:38
finddepth.pl	1.1 KB	-rw-r--r--	2017-06-13 23:38
flush.pl	642 B	-rw-r--r--	2017-06-13 23:38
ftp.pl	23.53 KB	-rw-r--r--	2017-06-13 23:38
getcwd.pl	1.37 KB	-rw-r--r--	2017-06-13 23:38
getopt.pl	1.27 KB	-rw-r--r--	2017-06-13 23:38
getopts.pl	1.35 KB	-rw-r--r--	2017-06-13 23:38
hostname.pl	727 B	-rw-r--r--	2017-06-13 23:38
importenv.pl	283 B	-rw-r--r--	2017-06-13 23:38
look.pl	1.23 KB	-rw-r--r--	2017-06-13 23:38
newgetopt.pl	2.15 KB	-rw-r--r--	2010-07-09 12:26
open2.pl	185 B	-rw-r--r--	2017-06-13 23:38
open3.pl	185 B	-rw-r--r--	2017-06-13 23:38
parent.pm	2.83 KB	-rw-r--r--	2011-03-08 17:26
perldoc.pod	8.25 KB	-rw-r--r--	2013-01-28 03:32
pwd.pl	1.44 KB	-rw-r--r--	2017-06-13 23:38
shellwords.pl	280 B	-rw-r--r--	2017-06-13 23:38
stat.pl	525 B	-rw-r--r--	2017-06-13 23:38
syslog.pl	4.69 KB	-rw-r--r--	2017-06-13 23:38
tainted.pl	164 B	-rw-r--r--	2017-06-13 23:38
termcap.pl	4.02 KB	-rw-r--r--	2017-06-13 23:38
timelocal.pl	690 B	-rw-r--r--	2017-06-13 23:38
validate.pl	3.64 KB	-rw-r--r--	2017-06-13 23:38

Rename

package bigfloat;
require "bigint.pl";
#
# This library is no longer being maintained, and is included for backward
# compatibility with Perl 4 programs which may require it.
#
# In particular, this should not be used as an example of modern Perl
# programming techniques.
#
# Suggested alternative: Math::BigFloat
#
# Arbitrary length float math package
#
# by Mark Biggar
#
# number format
#   canonical strings have the form /[+-]\d+E[+-]\d+/
#   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
# Division is computed to 
#   max($div_scale,length(dividend)+length(divisor)) 
#   digits by default.
# Also used for default sqrt scale

$div_scale = 40;

# Rounding modes one of 'even', 'odd', '+inf', '-inf', 'zero' or 'trunc'.

$rnd_mode = 'even';

#   bigfloat routines
#
#   fadd(NSTR, NSTR) return NSTR            addition
#   fsub(NSTR, NSTR) return NSTR            subtraction
#   fmul(NSTR, NSTR) return NSTR            multiplication
#   fdiv(NSTR, NSTR[,SCALE]) returns NSTR   division to SCALE places
#   fneg(NSTR) return NSTR                  negation
#   fabs(NSTR) return NSTR                  absolute value
#   fcmp(NSTR,NSTR) return CODE             compare undef,<0,=0,>0
#   fround(NSTR, SCALE) return NSTR         round to SCALE digits
#   ffround(NSTR, SCALE) return NSTR        round at SCALEth place
#   fnorm(NSTR) return (NSTR)               normalize
#   fsqrt(NSTR[, SCALE]) return NSTR        sqrt to SCALE places

# Convert a number to canonical string form.
#   Takes something that looks like a number and converts it to
#   the form /^[+-]\d+E[+-]\d+$/.
sub main'fnorm { #(string) return fnum_str
    local($_) = @_;
    s/\s+//g;                               # strip white space
    if (/^([+-]?)(\d*)(\.(\d*))?([Ee]([+-]?\d+))?$/
	  && ($2 ne '' || defined($4))) {
	my $x = defined($4) ? $4 : '';
	&norm(($1 ? "$1$2$x" : "+$2$x"), (($x ne '') ? $6-length($x) : $6));
    } else {
	'NaN';
    }
}

# normalize number -- for internal use
sub norm { #(mantissa, exponent) return fnum_str
    local($_, $exp) = @_;
    if ($_ eq 'NaN') {
	'NaN';
    } else {
	s/^([+-])0+/$1/;                        # strip leading zeros
	if (length($_) == 1) {
	    '+0E+0';
	} else {
	    $exp += length($1) if (s/(0+)$//);  # strip trailing zeros
	    sprintf("%sE%+ld", $_, $exp);
	}
    }
}

# negation
sub main'fneg { #(fnum_str) return fnum_str
    local($_) = &'fnorm($_[0]);
    vec($_,0,8) ^= ord('+') ^ ord('-') unless $_ eq '+0E+0'; # flip sign
    if ( ord("\t") == 9 ) { # ascii
        s/^H/N/;
    }
    else { # ebcdic character set
        s/\373/N/;
    }
    $_;
}

# absolute value
sub main'fabs { #(fnum_str) return fnum_str
    local($_) = &'fnorm($_[0]);
    s/^-/+/;		                       # mash sign
    $_;
}

# multiplication
sub main'fmul { #(fnum_str, fnum_str) return fnum_str
    local($x,$y) = (&'fnorm($_[0]),&'fnorm($_[1]));
    if ($x eq 'NaN' || $y eq 'NaN') {
	'NaN';
    } else {
	local($xm,$xe) = split('E',$x);
	local($ym,$ye) = split('E',$y);
	&norm(&'bmul($xm,$ym),$xe+$ye);
    }
}

# addition
sub main'fadd { #(fnum_str, fnum_str) return fnum_str
    local($x,$y) = (&'fnorm($_[0]),&'fnorm($_[1]));
    if ($x eq 'NaN' || $y eq 'NaN') {
	'NaN';
    } else {
	local($xm,$xe) = split('E',$x);
	local($ym,$ye) = split('E',$y);
	($xm,$xe,$ym,$ye) = ($ym,$ye,$xm,$xe) if ($xe < $ye);
	&norm(&'badd($ym,$xm.('0' x ($xe-$ye))),$ye);
    }
}

# subtraction
sub main'fsub { #(fnum_str, fnum_str) return fnum_str
    &'fadd($_[0],&'fneg($_[1]));    
}

# division
#   args are dividend, divisor, scale (optional)
#   result has at most max(scale, length(dividend), length(divisor)) digits
sub main'fdiv #(fnum_str, fnum_str[,scale]) return fnum_str
{
    local($x,$y,$scale) = (&'fnorm($_[0]),&'fnorm($_[1]),$_[2]);
    if ($x eq 'NaN' || $y eq 'NaN' || $y eq '+0E+0') {
	'NaN';
    } else {
	local($xm,$xe) = split('E',$x);
	local($ym,$ye) = split('E',$y);
	$scale = $div_scale if (!$scale);
	$scale = length($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),&'babs($ym)),
	    $xe-$ye-$scale);
    }
}

# round int $q based on fraction $r/$base using $rnd_mode
sub round { #(int_str, int_str, int_str) return int_str
    local($q,$r,$base) = @_;
    if ($q eq 'NaN' || $r eq 'NaN') {
	'NaN';
    } elsif ($rnd_mode eq 'trunc') {
	$q;                         # just truncate
    } else {
	local($cmp) = &'bcmp(&'bmul($r,'+2'),$base);
	if ( $cmp < 0 ||
		 ($cmp == 0 &&
		  ( $rnd_mode eq 'zero'                             ||
		   ($rnd_mode eq '-inf' && (substr($q,0,1) eq '+')) ||
		   ($rnd_mode eq '+inf' && (substr($q,0,1) eq '-')) ||
		   ($rnd_mode eq 'even' && $q =~ /[24680]$/)        ||
		   ($rnd_mode eq 'odd'  && $q =~ /[13579]$/)        )) ) {
	    $q;                     # round down
	} else {
	    &'badd($q, ((substr($q,0,1) eq '-') ? '-1' : '+1'));
				    # round up
	}
    }
}

# round the mantissa of $x to $scale digits
sub main'fround { #(fnum_str, scale) return fnum_str
    local($x,$scale) = (&'fnorm($_[0]),$_[1]);
    if ($x eq 'NaN' || $scale <= 0) {
	$x;
    } else {
	local($xm,$xe) = split('E',$x);
	if (length($xm)-1 <= $scale) {
	    $x;
	} else {
	    &norm(&round(substr($xm,0,$scale+1),
			 "+0".substr($xm,$scale+1,1),"+10"),
		  $xe+length($xm)-$scale-1);
	}
    }
}

# round $x at the 10 to the $scale digit place
sub main'ffround { #(fnum_str, scale) return fnum_str
    local($x,$scale) = (&'fnorm($_[0]),$_[1]);
    if ($x eq 'NaN') {
	'NaN';
    } else {
	local($xm,$xe) = split('E',$x);
	if ($xe >= $scale) {
	    $x;
	} else {
	    $xe = length($xm)+$xe-$scale;
	    if ($xe < 1) {
		'+0E+0';
	    } elsif ($xe == 1) {
		# 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($xm,0,1).'0',
		      "+0".substr($xm,1,1),"+10"), $scale);
	    } else {
		&norm(&round(substr($xm,0,$xe),
		      "+0".substr($xm,$xe,1),"+10"), $scale);
	    }
	}
    }
}
    
# compare 2 values returns one of undef, <0, =0, >0
#   returns undef if either or both input value are not numbers
sub main'fcmp #(fnum_str, fnum_str) return cond_code
{
    local($x, $y) = (&'fnorm($_[0]),&'fnorm($_[1]));
    if ($x eq "NaN" || $y eq "NaN") {
	undef;
    } else {
	ord($y) <=> ord($x)
	||
	(  local($xm,$xe,$ym,$ye) = split('E', $x."E$y"),
	     (($xe <=> $ye) * (substr($x,0,1).'1')
             || &bigint'cmp($xm,$ym))
	);
    }
}

# square root by Newtons method.
sub main'fsqrt { #(fnum_str[, scale]) return fnum_str
    local($x, $scale) = (&'fnorm($_[0]), $_[1]);
    if ($x eq 'NaN' || $x =~ /^-/) {
	'NaN';
    } elsif ($x eq '+0E+0') {
	'+0E+0';
    } else {
	local($xm, $xe) = split('E',$x);
	$scale = $div_scale if (!$scale);
	$scale = length($xm)-1 if ($scale < length($xm)-1);
	local($gs, $guess) = (1, sprintf("1E%+d", (length($xm)+$xe-1)/2));
	while ($gs < 2*$scale) {
	    $guess = &'fmul(&'fadd($guess,&'fdiv($x,$guess,$gs*2)),".5");
	    $gs *= 2;
	}
	&'fround($guess, $scale);
    }
}