macros.rs - source
Description: Source of the Rust file `/Users/erlendbasso/.cargo/registry/src/github.com-1ecc6299db9ec823/approx-0.5.1/src/macros.rs`.
Keywords: rust, rustlang, rust-lang

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    // Copyright 2015 Brendan Zabarauskas
    //
    // Licensed under the Apache License, Version 2.0 (the "License");
    // you may not use this file except in compliance with the License.
    // You may obtain a copy of the License at
    //
    //     http://www.apache.org/licenses/LICENSE-2.0
    //
    // Unless required by applicable law or agreed to in writing, software
    // distributed under the License is distributed on an "AS IS" BASIS,
    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    // See the License for the specific language governing permissions and
    // limitations under the License.

    /// Approximate equality of using the absolute difference.
    #[macro_export]
    macro_rules! abs_diff_eq {
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*) => {
            $crate::AbsDiff::default()$(.$opt($val))*.eq(&$lhs, &$rhs)
        };
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*,) => {
            $crate::AbsDiff::default()$(.$opt($val))*.eq(&$lhs, &$rhs)
        };
    }

    /// Approximate inequality of using the absolute difference.
    #[macro_export]
    macro_rules! abs_diff_ne {
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*) => {
            $crate::AbsDiff::default()$(.$opt($val))*.ne(&$lhs, &$rhs)
        };
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*,) => {
            $crate::AbsDiff::default()$(.$opt($val))*.ne(&$lhs, &$rhs)
        };
    }

    /// Approximate equality using both the absolute difference and relative based comparisons.
    #[macro_export]
    macro_rules! relative_eq {
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*) => {
            $crate::Relative::default()$(.$opt($val))*.eq(&$lhs, &$rhs)
        };
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*,) => {
            $crate::Relative::default()$(.$opt($val))*.eq(&$lhs, &$rhs)
        };
    }

    /// Approximate inequality using both the absolute difference and relative based comparisons.
    #[macro_export]
    macro_rules! relative_ne {
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*) => {
            $crate::Relative::default()$(.$opt($val))*.ne(&$lhs, &$rhs)
        };
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*,) => {
            $crate::Relative::default()$(.$opt($val))*.ne(&$lhs, &$rhs)
        };
    }

    /// Approximate equality using both the absolute difference and ULPs (Units in Last Place).
    #[macro_export]
    macro_rules! ulps_eq {
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*) => {
            $crate::Ulps::default()$(.$opt($val))*.eq(&$lhs, &$rhs)
        };
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*,) => {
            $crate::Ulps::default()$(.$opt($val))*.eq(&$lhs, &$rhs)
        };
    }

    /// Approximate inequality using both the absolute difference and ULPs (Units in Last Place).
    #[macro_export]
    macro_rules! ulps_ne {
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*) => {
            $crate::Ulps::default()$(.$opt($val))*.ne(&$lhs, &$rhs)
        };
        ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*,) => {
            $crate::Ulps::default()$(.$opt($val))*.ne(&$lhs, &$rhs)
        };
    }

    #[doc(hidden)]
    #[macro_export]
    macro_rules! __assert_approx {
        ($eq:ident, $given:expr, $expected:expr) => {{
            match (&($given), &($expected)) {
                (given, expected) => assert!(
                    $eq!(*given, *expected),
    "assert_{}!({}, {})

        left  = {:?}
        right = {:?}

    ",
                    stringify!($eq),
                    stringify!($given),
                    stringify!($expected),
                    given, expected,
                ),
            }
        }};
        ($eq:ident, $given:expr, $expected:expr, $($opt:ident = $val:expr),+) => {{
            match (&($given), &($expected)) {
                (given, expected) => assert!(
                    $eq!(*given, *expected, $($opt = $val),+),
    "assert_{}!({}, {}, {})

        left  = {:?}
        right = {:?}

    ",
                    stringify!($eq),
                    stringify!($given),
                    stringify!($expected),
                    stringify!($($opt = $val),+),
                    given, expected,
                ),
            }
        }};
    }

    /// An assertion that delegates to [`abs_diff_eq!`], and panics with a helpful error on failure.
    #[macro_export(local_inner_macros)]
    macro_rules! assert_abs_diff_eq {
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*) => {
            __assert_approx!(abs_diff_eq, $given, $expected $(, $opt = $val)*)
        };
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*,) => {
            __assert_approx!(abs_diff_eq, $given, $expected $(, $opt = $val)*)
        };
    }

    /// An assertion that delegates to [`abs_diff_ne!`], and panics with a helpful error on failure.
    #[macro_export(local_inner_macros)]
    macro_rules! assert_abs_diff_ne {
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*) => {
            __assert_approx!(abs_diff_ne, $given, $expected $(, $opt = $val)*)
        };
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*,) => {
            __assert_approx!(abs_diff_ne, $given, $expected $(, $opt = $val)*)
        };
    }

    /// An assertion that delegates to [`relative_eq!`], and panics with a helpful error on failure.
    #[macro_export(local_inner_macros)]
    macro_rules! assert_relative_eq {
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*) => {
            __assert_approx!(relative_eq, $given, $expected $(, $opt = $val)*)
        };
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*,) => {
            __assert_approx!(relative_eq, $given, $expected $(, $opt = $val)*)
        };
    }

    /// An assertion that delegates to [`relative_ne!`], and panics with a helpful error on failure.
    #[macro_export(local_inner_macros)]
    macro_rules! assert_relative_ne {
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*) => {
            __assert_approx!(relative_ne, $given, $expected $(, $opt = $val)*)
        };
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*,) => {
            __assert_approx!(relative_ne, $given, $expected $(, $opt = $val)*)
        };
    }

    /// An assertion that delegates to [`ulps_eq!`], and panics with a helpful error on failure.
    #[macro_export(local_inner_macros)]
    macro_rules! assert_ulps_eq {
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*) => {
            __assert_approx!(ulps_eq, $given, $expected $(, $opt = $val)*)
        };
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*,) => {
            __assert_approx!(ulps_eq, $given, $expected $(, $opt = $val)*)
        };
    }

    /// An assertion that delegates to [`ulps_ne!`], and panics with a helpful error on failure.
    #[macro_export(local_inner_macros)]
    macro_rules! assert_ulps_ne {
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*) => {
            __assert_approx!(ulps_ne, $given, $expected $(, $opt = $val)*)
        };
        ($given:expr, $expected:expr $(, $opt:ident = $val:expr)*,) => {
            __assert_approx!(ulps_ne, $given, $expected $(, $opt = $val)*)
        };
    }