| CFML Reference |
|
|
ColdFusion Functions |
|
| CFML Reference |
|
|
ColdFusion Functions |
|
Returns e raised to the power of number. The constant e equals 2.71828182845904, the base of the natural logarithm.
Exp(number)
| Parameter |
Description |
|---|---|
| number |
Exponent applied to the base e |
To calculate powers of other bases, use ^ (the exponentiation operator). Exp is the inverse of Log, the natural logarithm of number.
<!--- This example shows how to use Exp --->
<html>
<head>
<title>Exp Example</title>
</head>
<body bgcolor = silver>
<H3>Exp Example</H3>
<cfif IsDefined("FORM.Submit")>
<cfoutput>
<P>Your number, #FORM.number#
<BR>#FORM.number# raised to the E power: #exp(FORM.number)#
<cfif FORM.number LTE 0>
<BR>You must enter a positive real number to see the natural
logarithm of the number<cfelse><BR>
The natural logarithm of #FORM.number#: #log(FORM.number)#</cfif>
<cfif FORM.number LTE 0><BR>
You must enter a positive real number to see the logarithm
of the number to base 10<cfelse><BR>
The logarithm of #FORM.number# to base 10: #log10(FORM.number)#</cfif>
</cfoutput>
</cfif>
<cfform action = "exp.cfm" method = "POST">
Enter a number to see its value raised to the E power,its
natural logarithm, and the logarithm of number to base 10.
<cfinput type = "Text" name = "number"
message = "You must enter a number"
validate = "float" required = "No">
<input type = "Submit" name = "Submit">
</cfform>
</body>
</html>
| Copyright © 2001, Macromedia Inc. All rights reserved. |
|