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Teensy 4.1 core updated for C++20
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teensy-core-4.1/teensy3/math_helper.h

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  1. /* ----------------------------------------------------------------------

  2. * Copyright (C) 2010 ARM Limited. All rights reserved.  

  3. *  

  4. * $Date:        29. November 2010  

  5. * $Revision: 	V1.0.3  

  6. *  

  7. * Project: 	    CMSIS DSP Library 

  8. *

  9. * Title:	    math_helper.h

  10. * 

  11. *

  12. * Description:	Prototypes of all helper functions required.  

  13. *

  14. * Target Processor: Cortex-M4/Cortex-M3

  15. *  

  16. * Version 1.0.3 2010/11/29 

  17. *    Re-organized the CMSIS folders and updated documentation.  

  18. *   

  19. * Version 1.0.2 2010/11/11  

  20. *    Documentation updated.   

  21. *  

  22. * Version 1.0.1 2010/10/05   

  23. *    Production release and review comments incorporated.  

  24. *  

  25. * Version 1.0.0 2010/09/20   

  26. *    Production release and review comments incorporated.  

  27. *  

  28. * Version 0.0.7  2010/06/10   

  29. *    Misra-C changes done 

  30. * -------------------------------------------------------------------- */

  31. 

  32. 

  33. #include "arm_math.h"

  34. 

  35. #ifndef MATH_HELPER_H

  36. #define MATH_HELPER_H

  37. 

  38. #ifdef  __cplusplus

  39. extern "C"

  40. {

  41. #endif

  42. 

  43. float arm_snr_f32(float *pRef, float *pTest,  uint32_t buffSize);  

  44. void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples);

  45. void arm_provide_guard_bits_q15(q15_t *input_buf, uint32_t blockSize, uint32_t guard_bits);

  46. void arm_provide_guard_bits_q31(q31_t *input_buf, uint32_t blockSize, uint32_t guard_bits);

  47. void arm_float_to_q14(float *pIn, q15_t *pOut, uint32_t numSamples);

  48. void arm_float_to_q29(float *pIn, q31_t *pOut, uint32_t numSamples);

  49. void arm_float_to_q28(float *pIn, q31_t *pOut, uint32_t numSamples);

  50. void arm_float_to_q30(float *pIn, q31_t *pOut, uint32_t numSamples);

  51. void arm_clip_f32(float *pIn, uint32_t numSamples);

  52. uint32_t arm_calc_guard_bits(uint32_t num_adds);

  53. void arm_apply_guard_bits (float32_t * pIn, uint32_t numSamples, uint32_t guard_bits);

  54. uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t * pOut, uint32_t numSamples);

  55. uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t *pOut, uint32_t numSamples);

  56. uint32_t arm_calc_2pow(uint32_t guard_bits);

  57. 

  58. #ifdef  __cplusplus

  59. }

  60. #endif

  61. 

  62. #endif