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Add f16 and f128 support

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beetrees 2024-07-10 09:38:47 +01:00
parent da27b89ca5
commit d5db933f9d
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28 changed files with 384 additions and 73 deletions
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24
crates/syntax/src/ast/token_ext.rs
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@ -489,6 +489,8 @@ impl ast::Byte {
#[cfg(test)]
mod tests {
use rustc_apfloat::ieee::Quad as f128;
use crate::ast::{self, make, FloatNumber, IntNumber};
fn check_float_suffix<'a>(lit: &str, expected: impl Into<Option<&'a str>>) {
@ -499,14 +501,16 @@ mod tests {
assert_eq!(IntNumber { syntax: make::tokens::literal(lit) }.suffix(), expected.into());
}
fn check_float_value(lit: &str, expected: impl Into<Option<f64>> + Copy) {
// FIXME(#17451) Use `expected: f128` once `f128` is stabilised.
fn check_float_value(lit: &str, expected: &str) {
let expected = Some(expected.parse::<f128>().unwrap());
assert_eq!(
FloatNumber { syntax: make::tokens::literal(lit) }.value_string().parse::<f64>().ok(),
expected.into()
FloatNumber { syntax: make::tokens::literal(lit) }.value_string().parse::<f128>().ok(),
expected
);
assert_eq!(
IntNumber { syntax: make::tokens::literal(lit) }.value_string().parse::<f64>().ok(),
expected.into()
IntNumber { syntax: make::tokens::literal(lit) }.value_string().parse::<f128>().ok(),
expected
);
}
@ -520,9 +524,9 @@ mod tests {
check_float_suffix("123f32", "f32");
check_float_suffix("123.0e", None);
check_float_suffix("123.0e4", None);
check_float_suffix("123.0ef32", "f32");
check_float_suffix("123.0ef16", "f16");
check_float_suffix("123.0E4f32", "f32");
check_float_suffix("1_2_3.0_f32", "f32");
check_float_suffix("1_2_3.0_f128", "f128");
}
#[test]
@ -589,8 +593,10 @@ bcde", b"abcde",
#[test]
fn test_value_underscores() {
check_float_value("1.234567891011121_f64", 1.234567891011121_f64);
check_float_value("1__0.__0__f32", 10.0);
check_float_value("1.3_4665449586950493453___6_f128", "1.346654495869504934536");
check_float_value("1.234567891011121_f64", "1.234567891011121");
check_float_value("1__0.__0__f32", "10.0");
check_float_value("3._0_f16", "3.0");
check_int_value("0b__1_0_", 2);
check_int_value("1_1_1_1_1_1", 111111);
}