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<?php
function CreateTest($f, $file)
{
$F = $f;
$C = preg_replace('/(sinh?|cosh?|tanh?|pow|exp)/', 'fp_$1', $f);
$vars = Array('x');
#if(strpos($f, '(x)') !== false) $vars[] = 'x';
#if(strpos($f, '(y)') !== false) $vars[] = 'y';
print "$F\n";
/* file_put_contents($file,
"T=d\n".
"V=".join(',', $vars)."\n".
"R=-4,4,0.5\n".
"F= $F\n".
"C= $C\n");*/
}
$functions = Array('sin','cos','tan','sinh','cosh','tanh','exp');
for($operator=0; $operator<2; ++$operator)
for($a=0; $a<7; ++$a)
for($b=$a+1; $b<7; ++$b)
{
$f1 = $functions[$a];
$f2 = $functions[$b];
for($ae=-2; $ae<=2; ++$ae)
for($be=-2; $be<=2; ++$be)
{
if($be == 0 && $ae == 1) continue; // testing the function alone is not very cool
if($ae == 0 && $be == 1) continue; // testing the function alone is not very cool
if($a < 3 && $f2=='exp') continue; // don't bother mixing exp with sin/cos/tan
if($b < 3 && $f1=='exp') continue; // don't bother mixing exp with sin/cos/tan
if(!$ae && !$be) continue;
$afunc = "$f1(x)";
if($ae == 0) $afunc = "1";
elseif($ae != 1) $afunc = "pow($afunc,{$ae}.0)";
$func = $afunc;
if($be < 0 && $operator==0)
{
$func .= " / ";
$bfunc = "$f2(x)";
if($be == -1) {}
else $bfunc = "pow($bfunc,".(-$be).".0)";
$func .= $bfunc;
}
else if($be != 0)
{
$func .= ($operator==0 ? " * " : " + ");
$bfunc = "$f2(x)";
if($be == 1) {}
else $bfunc = "pow($bfunc,{$be}.0)";
$func .= $bfunc;
}
static $counter = 0;
++$counter;
$name = $counter;
#$op = $operator?'add':'mul';
#$name = sprintf('%s_%sp%d_%sp%d', $op,$f1,$ae,$f2,$be);
CreateTest($func, $name);
if(preg_match('/h\(/', $func))
{
CreateTest(str_replace('(x)', '(x*x)', $func),
++$counter);
}
}
}
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