<html>
<head>
<title>PHP DSGE pro2</title>
</head>
<body>
<?php
$time1 = microtime();
$beta = 0.95;
$a = 0.33;
$z1 = 1/ $beta - 1;
$ks = 0.5*pow($z1/$a,1/($a-1));
$h = 2 * $ks / 100;
for ( $n=1; $n<=100; $n++ ){
$k[$n] = $n * $h;
$lx[$n] = 0.5;
$cx[$n] = pow($k[$n] , $a) * pow($lx[$n] , 1 - $a);
}
$t1 = 0;
do {
for ( $n=10; $n<=90; $n++ ){
$k1 = $k[$n] + pow($k[$n] , $a) * pow($lx[$n] ,1 - $a) - $cx[$n];
$n1 = $k1 / $h;
$n2 = floor($n1);
$n3 = $n2 + 1;
$c1 = $cx[$n2] + ($n1 - $n2) * ($cx[$n3] - $cx[$n2]);
$l1 = $lx[$n2] + ($n1 - $n2) * ($lx[$n3] - $lx[$n2]);
$r1 = $a * pow($k1 , $a - 1) * pow($l1,1 - $a);
$cp[$n] = $c1 / ($beta * (1 + $r1)) ;
$w1 = (1 - $a) * pow($k[$n] , $a) * pow($lx[$n] , -$a);
$lp[$n] = 1 - $cx[$n] / $w1;
}
$e = 0;
for ( $n=10; $n<=90; $n++ ){
$e = $e + pow($cx[$n] - $cp[$n],2) + pow($lx[$n] - $lp[$n],2);
}
print ( $t1);
print "=>";
print ( $e);
print "<br />";
for ( $n=10; $n<=90; $n++ ){
$cx[$n] = $cp[$n];
$lx[$n] = $lp[$n];
}
If ( $e < 0.0001) {$t1 = 1000;
}
$t1 = $t1 + 1;
}
while($t1 < 100);
for ( $n=10; $n<=90; $n++ ){
print ( $k[$n]);
print ",";
print ( $cx[$n]);
print ",";
print ( $lx[$n]);
print "<br />";
}
$time2 = microtime();
$time = $time2 - $time1;
print "計算時間は";
print ($time);
print "秒です。";
?>
</body>
</html>
最終更新：2009年04月27日 11:34
