Filter.h — Dsp Filters And Transformations - Analog Devices VISUALDSP++ 3.5 Manual

DSP Run-Time Library Guide
Table 4-1. Complex Functions (Cont'd)
Description
Complex Multiply
Complex Division
Get Phase of
Complex Number
Complex Conjugate
Convert Cartesian to
Polar Coordinates
Convert Polar to
Cartesian Coordinates
Complex Exponential
Normalization
filter.h — DSP Filters and Transformations
The
filter.h
includes the A-law and µ-law companders that are used by voice-band
compression and expansion applications.
The header file also contains functions that perform key transformations
used in DSPs, including FFTs and convolution.
4-6
Prototype
complex_double cmlt (complex_double a, complex_double b);
complex_float cmltf (complex_float a, complex_float b);
complex_fract16 cmlt_fr16 (complex_fract16 a,
complex_fract16 b);
complex_double cdiv (complex_double a, complex_double b);
complex_float cdivf (complex_float a, complex_float b);
complex_fract16 cdiv_fr16 (complex_fract16 a,
complex_fract16 b);
double arg (complex_double a);
float argf (complex_float a);
fract16 arg_fr16 (complex_fr16 a);
complex_double conj (complex_double a);
complex_float conjf (complex_float a);
complex_fract16 conj_fr16 (complex_fract16 a);
double cartesian (complex_double a, double* phase)
float cartesianf (complex_float a, float* phase)
fract16 cartesian_fr16 (complex_fract16 a, fract16* phase)
complex_double polar (double mag, double phase);
complex_float polarf (float mag, float phase);
complex_fract16 polar_fr16 (fract16 mag, fract16 phase);
complex_double cexp (double a);
complex_float cexpf (float a);
complex_double norm (complex_double a);
complex_float normf (complex_float a);
header file contains filters used in signal processing. It also
VisualDSP++ 3.5 C/C++ Compiler and Library Manual
for ADSP-219x DSPs