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// skip-filecheck
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
// compile-flags: --crate-type lib -Cdebug-assertions=no
#![feature(flt2dec)]
extern crate core;
use core::num::flt2dec;
use std::fmt::{Formatter, Result};
// EMIT_MIR funky_arms.float_to_exponential_common.ConstProp.diff
pub fn float_to_exponential_common<T>(fmt: &mut Formatter<'_>, num: &T, upper: bool) -> Result
where
T: flt2dec::DecodableFloat,
{
let force_sign = fmt.sign_plus();
// A bug in const propagation (never reached master, but during dev of a PR) caused the
// `sign = Minus` assignment to get propagated into all future reads of `sign`. This is
// wrong because `sign` could also have `MinusPlus` value.
let sign = match force_sign {
false => flt2dec::Sign::Minus,
true => flt2dec::Sign::MinusPlus,
};
if let Some(precision) = fmt.precision() {
// 1 integral digit + `precision` fractional digits = `precision + 1` total digits
float_to_exponential_common_exact(fmt, num, sign, precision as u32 + 1, upper)
} else {
float_to_exponential_common_shortest(fmt, num, sign, upper)
}
}
#[inline(never)]
fn float_to_exponential_common_exact<T>(
fmt: &mut Formatter<'_>,
num: &T,
sign: flt2dec::Sign,
precision: u32,
upper: bool,
) -> Result
where
T: flt2dec::DecodableFloat,
{
unimplemented!()
}
#[inline(never)]
fn float_to_exponential_common_shortest<T>(
fmt: &mut Formatter<'_>,
num: &T,
sign: flt2dec::Sign,
upper: bool,
) -> Result
where
T: flt2dec::DecodableFloat,
{
unimplemented!()
}
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