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Improved accuracy for derivation

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This commit is contained in:
bakk 2021-05-17 21:27:11 +02:00
parent 15c30cfeee
commit ff6ad6a10d
1 changed files with 2 additions and 2 deletions
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4
kalk/src/calculus.rs
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@ -14,7 +14,7 @@ pub fn derive_func(
const H: f64 = 0.000001;
let unit = &argument.unit.to_string();
let argument_with_h = Expr::Literal(argument.clone().add(context, H.into()).to_f64());
let argument_without_h = Expr::Literal(argument.to_f64());
let argument_without_h = Expr::Literal(argument.sub(context, H.into()).to_f64());
let f_x_h = interpreter::eval_fn_call_expr(
context,
@ -29,7 +29,7 @@ pub fn derive_func(
unit,
)?;
Ok(f_x_h.sub(context, f_x).div(context, H.into()))
Ok(f_x_h.sub(context, f_x).div(context, (2f64 * H).into()))
}
pub fn integrate(