90442458ac
core: add unstable no_fp_fmt_parse to disable float formatting code In some projects (e.g. kernel), floating point is forbidden. They can disable hardware floating point support and use `+soft-float` to avoid fp instructions from being generated, but as libcore contains the formatting code for `f32` and `f64`, some fp intrinsics are depended. One could define stubs for these intrinsics that just panic [1], but it means that if any formatting functions are accidentally used, mistake can only be caught during the runtime rather than during compile-time or link-time, and they consume a lot of space without LTO. This patch provides an unstable cfg `no_fp_fmt_parse` to disable these. A panicking stub is still provided for the `Debug` implementation (unfortunately) because there are some SIMD types that use `#[derive(Debug)]`. [1]: https://lkml.org/lkml/2021/4/14/1028 |
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|---|---|---|
| .. | ||
| dec2flt | ||
| flt2dec | ||
| shells | ||
| bignum.rs | ||
| diy_float.rs | ||
| error.rs | ||
| f32.rs | ||
| f64.rs | ||
| fmt.rs | ||
| int_macros.rs | ||
| mod.rs | ||
| nonzero.rs | ||
| uint_macros.rs | ||
| wrapping.rs | ||