62 lines
1.3 KiB
HTML
62 lines
1.3 KiB
HTML
<html>
|
|
<head>
|
|
<title>Blitz3D Docs</title>
|
|
<link rel=stylesheet href=../css/commands.css type=text/css>
|
|
</head>
|
|
<body>
|
|
<h1>Log# ( x# )</h1>
|
|
<h1>Parameters</h1>
|
|
<table>
|
|
<tr>
|
|
<td>
|
|
x = any positive number.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
<h1>Description</h1>
|
|
<table>
|
|
<tr>
|
|
<td>
|
|
Common logarithm of x. This is the inverse of raising 10 to a power.
|
|
|
|
<br />
|
|
|
|
<br />
|
|
y = Log10( x ) means y satifies x = 10 ^ y.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
<h1><a href=../2d_examples/Log10.bb>Example</a></h1>
|
|
<table>
|
|
<tr>
|
|
<td>
|
|
; Log10 example
|
|
<br />
|
|
|
|
<br />
|
|
; NaN means "Not a Number", the numerical result is invalid.
|
|
<br />
|
|
|
|
<br />
|
|
HidePointer
|
|
<br />
|
|
|
|
<br />
|
|
; First, what happens with non-positive numbers...
|
|
<br />
|
|
|
|
<br />
|
|
Print "Log10( -1 ) = " + Log10( -1 )
|
|
<br />
|
|
Print "Log10( 0 ) = " + Log10( 0 )
|
|
<br />
|
|
Print
|
|
<br />
|
|
|
|
<br />
|
|
; ... and now some well behaved numbers...
|
|
<br />
|
|
|
|
<br />
|
|
x# = 1.0 / 4096.0 ; small positive number
|
|
<br />
|
|
|
|
<br />
|
|
For n = 1 To 15
|
|
<br />
|
|
|
|
<br />
|
|
Print "Log10( " + LSet( x, 13 ) + " ) = " + Log10( x )
|
|
<br />
|
|
x = 8 * x
|
|
<br />
|
|
|
|
<br />
|
|
Next
|
|
<br />
|
|
|
|
<br />
|
|
WaitKey() : End
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
<br>
|
|
<a target=_top href=../index.htm>Index</a><br>
|
|
<br>
|
|
Click <a href=http://www.blitzbasic.co.nz/b3ddocs/command.php?name=Log10&ref=comments target=_blank>here</a> to view the latest version of this page online</body>
|
|
</html>
|