# format

## sf-decimal - structured fields decimal as defined in RFC8941

JSON Data Type: `number`

.

The `sf-decimal`

format represents a structured fields decimal as defined in RFC8941.

```
sf-decimal = ["-"] 1*12DIGIT "." 1*3DIGIT
```

Decimals are numbers with an integer and a fractional component. The integer component has at most 12 digits; the fractional component has at most three digits.

This format is appropriate for a header value that must conform to the sf-decimal structured field definition.