Complex to Real Fast Fourier Transform.  
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| template<int rank> | 
| array | fftC2R (const array &in, bool is_odd=false, const double norm_factor=0) | 
|  | C++ Interface for complex to real fast fourier transform.  More... 
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| AFAPI af_err | af_fft_c2r (af_array *out, const af_array in, const double norm_factor, const bool is_odd) | 
|  | C Interface for complex to real fast fourier transform for one dimensional signals.  More... 
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| AFAPI af_err | af_fft2_c2r (af_array *out, const af_array in, const double norm_factor, const bool is_odd) | 
|  | C Interface for complex to real fast fourier transform for two dimensional signals.  More... 
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| AFAPI af_err | af_fft3_c2r (af_array *out, const af_array in, const double norm_factor, const bool is_odd) | 
|  | C Interface for complex to real fast fourier transform for three dimensional signals.  More... 
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Complex to Real Fast Fourier Transform. 
C Interface for complex to real fast fourier transform for two dimensional signals. 
- Parameters
- 
  
    | [out] | out | is a real array containing the output of the transform. |  | [in] | in | is a complex array containing only the non redundant parts of the signals. |  | [in] | norm_factor | is the normalization factor with which the input is scaled before the transformation is applied |  | [in] | is_odd | is a flag signifying if the output should be even or odd size |  
 
- Returns
- AF_SUCCESS if the fft transform is successful, otherwise an appropriate error code is returned.
- Note
- The first dimension of the output will be 2 * dim0 - 1 if is_odd is true else 2 * dim0 - 2 where dim0 is the first dimension of the input. The remaining dimensions are unchanged. 
 
 
C Interface for complex to real fast fourier transform for three dimensional signals. 
- Parameters
- 
  
    | [out] | out | is a real array containing the output of the transform. |  | [in] | in | is a complex array containing only the non redundant parts of the signals. |  | [in] | norm_factor | is the normalization factor with which the input is scaled before the transformation is applied |  | [in] | is_odd | is a flag signifying if the output should be even or odd size |  
 
- Returns
- AF_SUCCESS if the fft transform is successful, otherwise an appropriate error code is returned.
- Note
- The first dimension of the output will be 2 * dim0 - 1 if is_odd is true else 2 * dim0 - 2 where dim0 is the first dimension of the input. The remaining dimensions are unchanged. 
 
 
C Interface for complex to real fast fourier transform for one dimensional signals. 
- Parameters
- 
  
    | [out] | out | is a real array containing the output of the transform. |  | [in] | in | is a complex array containing only the non redundant parts of the signals. |  | [in] | norm_factor | is the normalization factor with which the input is scaled before the transformation is applied |  | [in] | is_odd | is a flag signifying if the output should be even or odd size |  
 
- Returns
- AF_SUCCESS if the fft transform is successful, otherwise an appropriate error code is returned.
- Note
- The first dimension of the output will be 2 * dim0 - 1 if is_odd is true else 2 * dim0 - 2 where dim0 is the first dimension of the input. The remaining dimensions are unchanged. 
 
 
      
        
          | array af::fftC2R | ( | const array & | in, | 
        
          |  |  | bool | is_odd = false, | 
        
          |  |  | const double | norm_factor = 0 | 
        
          |  | ) |  |  | 
      
 
C++ Interface for complex to real fast fourier transform. 
- Parameters
- 
  
    | [in] | in | is a complex array containing only the non redundant parts of the signals |  | [in] | is_odd | is a flag signifying if the output should be even or odd size |  | [in] | norm_factor | is the normalization factor with which the input is scaled before the transformation is applied |  
 
- Template Parameters
- 
  
    | rank | signifies the dimensionality of the transform |  
 
- Returns
- A real array of size [2 * idim0 - 2 + is_odd, idim1, idim2, idim3] where idim{0,1,2,3} signify input dimensions