# ApCoCoA-1:Fn.SetAccuracy

From ApCoCoAWiki

This article is about a function from ApCoCoA-1. |

## Fn.SetAccuracy

Set the default accuracy.

### Syntax

Fn.SetAccuracy(N:INT):NULL

### Description

N must be positive. An accracy of N means that all results X are rounded

such that `| X - TrueValue | <= 0.5*10^(-N)`.

By default, the accuracy is set to 10.

@param

*N*the accuracy to be set.

#### Example

Fn.SetAccuracy(10); X1 := Fn.Sin(1); Fn.SetAccuracy(30); X2 := Fn.Sin(1); Dec(X1, 100); Dec(X2, 100); 0.8414709848 ------------------------------- 0.84147098480789650665250232163 -------------------------------