digits (Symbolic Math Toolbox)

Set variable precision accuracy

Syntax

```
digits(d)
d = digits
digits
```

Description

digits specifies the number of significant decimal digits that Maple uses to do variable precision arithmetic (VPA). The default value is 32 digits.

digits(d) sets the current VPA accuracy to d digits.

digits returns the current VPA accuracy.

Examples

```
z = 1.0e-16
x = 1.0e+2
digits(14)
```

then

```
y = vpa(x*z+1)
```

uses 14-digit decimal arithmetic and returns

```
y =
1.0000000000000
```

Whereas

```
digits(15)
y = vpa(x*z+1)
```

used 15-digit decimal arithmetic and returns

```
y =
1.00000000000001
```

See Also

double, vpa

diff double