/* TA-LIB Copyright (c) 1999-2025, Mario Fortier
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 *
 * - Neither name of author nor the names of its contributors
 *   may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* Important:
 *  This file is automatically generated by the utility ta_codegen.
 *  Any modifications will be lost on next execution of ta_codegen.
 *
 *  Modifications should instead be done with the "C" source file
 *  in ta-lib\src\ta_func
 */

/* List of contributors:
 *
 *  Initial  Name/description
 *  -------------------------------------------------------------------
 *  MF       Mario Fortier
 *
 *
 * Change history:
 *
 *  MMDDYY BY   Description
 *  -------------------------------------------------------------------
 *  112400 MF   Template creation.
 *  052603 MF   Adapt code to compile with .NET Managed C++
 */

// Import types from parent module
use super::*;

// Allow non-snake-case names to maintain TA-Lib API compatibility
#[allow(non_snake_case)]
#[allow(unused_variables)]
#[allow(dead_code)]
#[allow(unused_mut)]
#[allow(unused_assignments)]
impl Core {
    /// Lookback period for [`Core::macdfix`]: the number of leading input values consumed before
    /// the first output value can be produced.
    ///
    /// # Arguments
    ///
    /// * `optInSignalPeriod` — Smoothing period for the signal line (default 9, range 1..=100000)
    ///
    /// Returns `usize::MAX` when a parameter is out of range. Integer parameters accept `i32::MIN`
    /// to select their default value.
    #[inline]
    pub fn macdfix_lookback(&self, mut optInSignalPeriod: i32) -> usize {
        if ((optInSignalPeriod) as i32) == (i32::MIN) {
            optInSignalPeriod = 9;
        } else if (((optInSignalPeriod) as i32) < 1) || (((optInSignalPeriod) as i32) > 100000) {
            return usize::MAX;
        }
        // The lookback is driven by the signal line output.
        //
        // (must also account for the initial data consume
        //  by the fix 26 period EMA).
        return (self.ema_lookback(26) + self.ema_lookback(optInSignalPeriod)) as usize;
    }
    /// MACD with the fast/slow EMAs fixed to the classic 12/26 periods, exposing only the signal
    /// period. Thin wrapper that delegates to MACD with fast=slow=0. Signal-line crossovers and
    /// histogram sign flag momentum shifts.
    ///
    /// # Formula
    ///
    /// ```text
    /// MACD = EMA_12 - EMA_26   (fixed k: 0.15 for 12, 0.075 for 26)
    /// Signal = EMA(MACD, signalPeriod),  k = 2/(signalPeriod+1)
    /// Hist = MACD - Signal
    /// ```
    ///
    /// # Notes
    ///
    /// * A signal period of 1 disables signal-line smoothing: the signal equals the MACD line and
    ///   the histogram is zero. Before 0.6.5 this parameter value produced misaligned output
    ///   (issues #48/#59).
    ///
    /// # Arguments
    ///
    /// * `startIdx` — Start index of the requested calculation range.
    /// * `endIdx` — End index of the requested calculation range (inclusive).
    /// * `inReal` — Source series (typically close)
    /// * `optInSignalPeriod` — Smoothing period for the signal line (default 9, range 1..=100000)
    /// * `outBegIdx` — Set to the input index of the first output value.
    /// * `outNBElement` — Set to the number of output values written.
    /// * `outMACD` — Fixed EMA12 minus EMA26.
    /// * `outMACDSignal` — EMA of the MACD line.
    /// * `outMACDHist` — MACD minus signal.
    ///
    /// Integer parameters accept `i32::MIN` to select their default value.
    ///
    /// # Errors
    ///
    /// Returns [`RetCode::OutOfRangeStartIndex`] when `endIdx < startIdx`, and
    /// [`RetCode::BadParam`] when an optional parameter is outside its documented range.
    ///
    /// # Panics
    ///
    /// Input slices must cover `startIdx..=endIdx` and output slices must hold the number of values
    /// produced for that range: undersized slices panic or, for functions that forward to unchecked
    /// internals, cause undefined behavior. Sizing every output slice to the input length is always
    /// sufficient.
    ///
    /// # Examples
    ///
    /// ```
    /// use ta_lib::{Core, RetCode};
    ///
    /// let data: Vec<f64> = (0..252).map(|i| 100.0 + 10.0 * (0.1 * i as f64).sin()).collect();
    ///
    /// let core = Core::new();
    /// let mut out_beg = 0;
    /// let mut out_nb = 0;
    /// let mut macd = vec![0.0; 252];
    /// let mut macd_signal = vec![0.0; 252];
    /// let mut macd_hist = vec![0.0; 252];
    ///
    /// let ret = core.macdfix(
    ///     0, data.len() - 1, &data, 9,
    ///     &mut out_beg, &mut out_nb, &mut macd, &mut macd_signal, &mut macd_hist,
    /// );
    /// assert_eq!(ret, RetCode::Success);
    /// assert!(out_nb > 0);
    /// ```
    ///
    /// # See also
    ///
    /// [`Core::macd`] · [`Core::macdext`] · [`Core::ema`] · [`Core::apo`]
    ///
    /// Further reading: [ta-lib.org/functions/macdfix](https://ta-lib.org/functions/macdfix/)
    #[doc(alias = "MovingAverageConvergenceDivergenceFix")]
    pub fn macdfix(
        &self,
        startIdx: usize,
        endIdx: usize,
        inReal: &[f64],
        mut optInSignalPeriod: i32,
        outBegIdx: &mut usize,
        outNBElement: &mut usize,
        outMACD: &mut [f64],
        outMACDSignal: &mut [f64],
        outMACDHist: &mut [f64],
    ) -> RetCode {
        if endIdx < startIdx {
            return RetCode::OutOfRangeStartIndex;
        }
        if ((optInSignalPeriod) as i32) == (i32::MIN) {
            optInSignalPeriod = 9;
        } else if (((optInSignalPeriod) as i32) < 1) || (((optInSignalPeriod) as i32) > 100000) {
            return RetCode::BadParam;
        }
        let mut startIdx = startIdx;
        return self.macd_unguarded(startIdx, endIdx, inReal, 0, 0, optInSignalPeriod, outBegIdx, outNBElement, outMACD, outMACDSignal, outMACDHist);
        // 0 indicate fix 12 == 0.15  for optInFastPeriod
        // 0 indicate fix 26 == 0.075 for optInSlowPeriod
    }
    /// Unchecked variant of [`Core::macdfix`], used for internal cross-indicator calls.
    ///
    /// Skips parameter validation and uses unchecked indexing internally. Every argument must
    /// satisfy the constraints documented on [`Core::macdfix`]; an out-of-range parameter, an input
    /// slice not covering `startIdx..=endIdx`, or an undersized output slice may panic or cause
    /// undefined behavior. Prefer [`Core::macdfix`].
    #[inline]
    pub fn macdfix_unguarded(
        &self,
        mut startIdx: usize,
        endIdx: usize,
        inReal: &[f64],
        mut optInSignalPeriod: i32,
        outBegIdx: &mut usize,
        outNBElement: &mut usize,
        outMACD: &mut [f64],
        outMACDSignal: &mut [f64],
        outMACDHist: &mut [f64],
    ) -> RetCode {
        unsafe {
        assert!(endIdx < inReal.len());
        let _assertLb = self.macdfix_lookback(optInSignalPeriod);
        let _assertStart = if startIdx > _assertLb { startIdx } else { _assertLb };
        assert!(_assertStart > endIdx || endIdx - _assertStart < outMACD.len());
        assert!(_assertStart > endIdx || endIdx - _assertStart < outMACDSignal.len());
        assert!(_assertStart > endIdx || endIdx - _assertStart < outMACDHist.len());
        return self.macd_unguarded(startIdx, endIdx, inReal, 0, 0, optInSignalPeriod, outBegIdx, outNBElement, outMACD, outMACDSignal, outMACDHist);
        } // unsafe
    }
}
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/* End of File */
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