# shz_divf_fsrra

Source: https://sh4zam.com/api/scalar/shz_divf_fsrra/

> Divides num by denom using a very fast approximation, which requires denom be a positive value

```c
SHZ_INLINE float shz_divf_fsrra(float num, float denom) SHZ_NOEXCEPT;
```

Divides `num` by `denom` using a very fast approximation, which requires `denom` be a positive value.

## Parameters

| Name | Type | Description |
| --- | --- | --- |
| `num` | `float` |  |
| `denom` | `float` |  |

## Returns

`float`

## Naming and requirements

- `_fsrra`: Uses `FSRRA` (fast approximate 1/sqrt(x)). The argument or denominator must be positive. Faster, less precise. ([Naming and Suffixes](https://sh4zam.com/concepts/naming-and-suffixes/))

## Availability

- **C++ equivalent:** [`shz::divf_fsrra`](https://sh4zam.com/api/cpp/#shzdivf_fsrra)
- **Type-generic form:** none
- **Back-ends:** SH4: shared C implementation · SW: portable C · SPU: shared C implementation
- **Defined in:** [`sh4zam/shz_scalar.h:295`](https://github.com/gyrovorbis/sh4zam/blob/ba1e30c88d49df0311870b229e1dd860ef26c477/include/sh4zam/shz_scalar.h#L295)
- **Module:** [Scalar](https://sh4zam.com/api/scalar/), section "FSRRA"