# Math library to calculate basic functions with minimal error per step thanks to self-balancing computation.
```toml
min_err_per_step = "0.0.71"
```
```rs
use min_err_per_step::trig::Trig_w_local_prec;
use min_err_per_step::base::{glob_precision, Pi};
...
glob_precision (Some (6000));
let _45deg: rugfloat = Pi() / 4;
let mut cos_45deg: rug::Float = _45deg.__cos(4200);
```
```rs
use min_err_per_step::trig::Trig;
use min_err_per_step::base::{glob_precision, Pi, ext_const_E};
...
let PRECO = glob_precision (Some (6000));
let _45deg: rugfloat = Pi() / 4;
let mut cos_45deg = _45deg.__cos();
let power = rugfloat::with_val_64 (PREC0, 0.693147181);
let ext_const_e = ext_const_E (&power);
```
```rs
use min_err_per_step::logarithm::crawler_ln;
use min_err_per_step::base::{glob_precision, Pi, ext_const_E};
...
let PRECO = glob_precision (Some (6000));
let steps_of_crawler = 6000u64;
let steps_of_feeder = 100u64;
let frequency_of_broker = 100u64;
let approx_ln_8 = crawler_ln (
&_8,
steps_of_crawler,
steps_of_feeder,
frequency_of_broker
); // calcs ln(8)
// How to establish Numerical Gravity: https://alg0z.blogspot.com/2025/09/fake-calculations-to-feed-numerical.html
```
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