# SHZ_F_PI_4

Source: https://sh4zam.com/api/trig/SHZ_F_PI_4/

```c
#define SHZ_F_PI_4 (SHZ_F_PI * 0.25f)
```

Single-precision FP PI approximation divided by 4.

## Availability

- **C++ equivalent:** none (usable from C++ as is)
- **Back-ends:** n/a (not a function)
- **Defined in:** [`sh4zam/shz_trig.h:33`](https://github.com/gyrovorbis/sh4zam/blob/ba1e30c88d49df0311870b229e1dd860ef26c477/include/sh4zam/shz_trig.h#L33)
- **Module:** [Trigonometry](https://sh4zam.com/api/trig/), section "Macros"