6822505602
Uses statrs for numerical functions REFACTOR: Put statistical functions on its own module This might seem counter-intuitive but the wasm build after this refactor is 1528 bytes smaller :)
39 lines
1.1 KiB
Rust
39 lines
1.1 KiB
Rust
use crate::expressions::types::CellReferenceIndex;
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use crate::{
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calc_result::CalcResult, expressions::parser::Node, expressions::token::Error, model::Model,
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};
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impl Model {
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pub(crate) fn fn_standardize(&mut self, args: &[Node], cell: CellReferenceIndex) -> CalcResult {
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// STANDARDIZE(x, mean, standard_dev)
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if args.len() != 3 {
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return CalcResult::new_args_number_error(cell);
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}
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let x = match self.get_number_no_bools(&args[0], cell) {
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Ok(f) => f,
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Err(e) => return e,
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};
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let mean = match self.get_number_no_bools(&args[1], cell) {
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Ok(f) => f,
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Err(e) => return e,
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};
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let std_dev = match self.get_number_no_bools(&args[2], cell) {
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Ok(f) => f,
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Err(e) => return e,
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};
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if std_dev <= 0.0 {
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return CalcResult::Error {
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error: Error::NUM,
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origin: cell,
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message: "standard_dev must be > 0 in STANDARDIZE".to_string(),
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};
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}
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let z = (x - mean) / std_dev;
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CalcResult::Number(z)
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}
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}
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