text: /*****************************************************************************
   *
   * \file
   *
   * \brief 16-bit operators program test
   *
   * This file show a way to use the 16-bit fixed point operators functions and print the output
   * results through the USART.
   *
   * Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.
   *
   * \asf_license_start
   *
   * \page License
   *
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   * to your use of third party software (including open source software) that
   * may accompany Microchip software.
   *
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   * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
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   * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
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   ******************************************************************************/
  
  /*! \mainpage
   * \section intro Introduction
   * This example demonstrates how to use the 16-bit fixed point operators functions.
   * To visualize the result, you may use a terminal configured as described in the section \ref configinfo.\n
   * Through this page, you can access the \ref group_dsplib documentation.
   *
   * \section compilinfo Compilation Information
   * This software is written for GNU GCC for 32-bit AVRs and for IAR Embedded Workbench
   * for Atmel 32-bit AVRs. Other compilers may or may not work.
   *
   * \section deviceinfo Device Info
   * All 32-bit AVR devices with a USART module can be used. This example has been tested
   * with the following setup:<BR>
   * - EVK1100 evaluation kit,
   * - EVK1101 evaluation kit.
   *
   * \section configinfo Configuration Information
   * This example has been tested with the following configuration:
   * - CPU clock: 12 MHz;
   * - USART1 connected to a PC serial port via a standard RS232 DB9 cable;
   * - PC terminal settings:
   *   - 9600 bps,
   *   - 8 data bits,
   *   - no parity bit,
   *   - 1 stop bit,
   *   - no flow control.
   */
  /*
   * Support and FAQ: visit <a href="https://www.microchip.com/support/">Microchip Support</a>
   */
  
  #include <avr32/io.h>
  
  #include "compiler.h"
  #include "board.h"
  
  #include "dsp.h"
  #include "dsp_debug.h"
  
  #include "pm.h"
  #include "cycle_counter.h"
  
  //! The main function
  int main(int argc, char *argv[])
  {
    dsp16_t number, result;
    int cycle_count;
  
    // Switch to external Oscillator 0.
    pm_switch_to_osc0(&AVR32_PM, FOSC0, OSC0_STARTUP);
  
    // Initialize the DSP debug module
    dsp_debug_initialization(FOSC0);
  
    dsp16_debug_printf("16-bit fixed point operators program test\n");
  
    dsp16_debug_printf("Type a number: ");
    number = dsp_debug_read_q(DSP16_QA, DSP16_QB);
  
    dsp16_debug_printf("Number to compute: %f\n", number);
  
    // 16-bit fixed point cosine
    cycle_count = Get_sys_count();
    result = dsp16_op_cos(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("cos(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point sine
    cycle_count = Get_sys_count();
    result = dsp16_op_sin(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("sin(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point arc cosine
    cycle_count = Get_sys_count();
    result = dsp16_op_acos(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("acos(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point arc sine
    cycle_count = Get_sys_count();
    result = dsp16_op_asin(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("asin(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point random
    dsp_op_srand(number);
    cycle_count = Get_sys_count();
    result = dsp16_op_rand();
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("rand()\t\t\t%f\t(%i cycles)\n", result, cycle_count);
  
    // 16-bit fixed point square root
    cycle_count = Get_sys_count();
    result = dsp16_op_sqrt(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("sqrt(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point absolute
    cycle_count = Get_sys_count();
    result = dsp16_op_abs(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("abs(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point natural logarithm
    cycle_count = Get_sys_count();
    result = dsp16_op_ln(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("ln(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point binary logarithm
    cycle_count = Get_sys_count();
    result = dsp16_op_log2(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("log2(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point common logarithm
    cycle_count = Get_sys_count();
    result = dsp16_op_log10(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("log10(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point exponential
    cycle_count = Get_sys_count();
    result = dsp16_op_exp(number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("exp(%f)\t\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    // 16-bit fixed point power
    cycle_count = Get_sys_count();
    result = dsp16_op_pow(DSP16_Q(0.5), number);
    cycle_count = Get_sys_count() - cycle_count;
    dsp16_debug_printf("pow(0.5, %f)\t%f\t(%i cycles)\n", number, result, cycle_count);
  
    while(1);
  }
  