## FibCalc(x, y, top)

##### Last updated June 26, 2002

**Version:** 1 |
**Requires:** CF5 |
**Library:** MathLib

**Description:**

This script Calculates the Fibonacci sequence (each integer is the sum of the two previous integers). Note that the function will also calculate the sequence for non-Fibonacci numbers.

**Return Values:**

Returns a comma-delimited list of numeric values.

**Example:**

```
<cfoutput>
#fibcalc(0,1,200)#<BR>
#fibcalc(1,1,200)#
</cfoutput>
```

**Parameters:**

Name | Description | Required |
---|---|---|

x | First number in the Fibonacci sequence. | Yes |

y | Second number in the Fibonacci sequence. | Yes |

top | Ceiling for the Fibonacci number. The sequence will terminate when this value is reached. | Yes |

**Full UDF Source: **

```
/**
* This script Calculates the Fibonacci sequence (each integer is the sum of the two previous integers).
*
* @param x First number in the Fibonacci sequence. (Required)
* @param y Second number in the Fibonacci sequence. (Required)
* @param top Ceiling for the Fibonacci number. The sequence will terminate when this value is reached. (Required)
* @return Returns a comma-delimited list of numeric values.
* @author Phillip B. Holmes (pholmes@mediares.com)
* @version 1, June 26, 2002
*/
function FibCalc(x,y,top){
var sequence = arrayNew(1);
var total = x+y;
sequence[1] = x;
sequence[2] = y;
while (total LTE top) {
ArrayAppend(sequence, total);
x=y;
y=total;
total=(x+y);
}
return ArrayToList(sequence, ',');
}
```

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