tame/tamer/src/num.rs

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// General numeric types for TAMER
//
// Copyright (C) 2014-2023 Ryan Specialty, LLC.
//
// This file is part of TAME.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//! General numeric types used throughout the system.
use crate::sym::{st, SymbolId};
/// Value dimensionality.
///
/// This indicates the number of subscripts needed to access a scalar
/// value.
/// This the value
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[repr(u8)]
pub enum Dim {
Scalar = 0,
Vector = 1,
Matrix = 2,
}
assert_eq_size!(Option<Dim>, Dim);
impl From<Dim> for u8 {
fn from(dim: Dim) -> Self {
dim as u8
}
}
impl From<Dim> for SymbolId {
fn from(dim: Dim) -> Self {
st::decimal1(dim as u8).as_sym()
}
}
impl std::fmt::Display for Dim {
fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
(*self as u8).fmt(fmt)
}
}
/// Machine representation of scalar data.
///
/// _NB: This was not enforced by the XSLT-based compiler._
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub enum Dtype {
/// {⊥,} = {0,1} ⊂ ℤ
Boolean,
///
Integer,
///
Float,
/// ∅
Empty,
}
impl Dtype {
pub fn as_sym(&self) -> SymbolId {
match self {
Dtype::Boolean => st::L_BOOLEAN,
Dtype::Integer => st::L_INTEGER,
Dtype::Float => st::L_FLOAT,
Dtype::Empty => st::L_EMPTY,
}
.as_sym()
}
}
impl From<Dtype> for SymbolId {
fn from(val: Dtype) -> Self {
val.as_sym()
}
}
impl std::fmt::Display for Dtype {
fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(fmt, "{}", self.as_sym())
}
}