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Update docs for serde_if_integer128

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The docs imply that the only consideration for using the
serde_if_integer128 macro is support for older versions of Rust, but
Serde's build configuration for 128-bit integers is also gated on the
target platform. For example, if Serde is being compiled for an
emscripten target, then it will not provide 128-bit integer APIs.

See also: https://github.com/BurntSushi/rust-csv/issues/158
This commit is contained in:
Andrew Gallant 2019-07-01 10:18:57 -04:00
parent 1c1eecabc0
commit f9fdd60e2e
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1 changed files with 6 additions and 6 deletions
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serde/src/integer128.rs
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@ -1,13 +1,13 @@
/// Conditional compilation depending on whether Serde is built with support for
/// 128-bit integers.
///
/// Data formats that wish to support Rust compiler versions older than 1.26 may
/// place the i128 / u128 methods of their Serializer and Deserializer behind
/// this macro.
/// Data formats that wish to support Rust compiler versions older than 1.26
/// (or targets that lack 128-bit integers) may place the i128 / u128 methods
/// of their Serializer and Deserializer behind this macro.
///
/// Data formats that require a minimum Rust compiler version of at least 1.26
/// do not need to bother with this macro and may assume support for 128-bit
/// integers.
/// Data formats that require a minimum Rust compiler version of at least 1.26,
/// or do not target platforms that lack 128-bit integers, do not need to
/// bother with this macro and may assume support for 128-bit integers.
///
/// ```edition2018
/// # use serde::private::ser::Error;