First cleaning step in "dsp_files" directory.

[Faustine.git] / dsp_files / mrfaustlib / complex.lib

diff --git a/dsp_files/mrfaustlib/complex.lib b/dsp_files/mrfaustlib/complex.lib
new file mode 100644 (file)
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+++ b/dsp_files/mrfaustlib/complex.lib
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+import ( "math.lib" );
+square = _ <: *;
+
+// Complex in cartesian coordinates
+carte_cplx = _, _: (_, 1 : vectorize), (_, 1 : vectorize) : #;
+
+// Cartesian complex : basic operations
+ccplx_real = _, 0 : [];
+ccplx_imag = _, 1 : [];
+ccplx_conj = _ <: ccplx_real, ccplx_imag : _, (0, _ : -) : carte_cplx;
+ccplx_modul2 = _ <: ccplx_real, ccplx_imag : square, square : +;
+ccplx_modul = ccplx_modul2 : sqrt;
+
+//real_not_zero = _ <: (ccplx_imag, ccplx_real : / : atan);
+//real_compare = _ <: (ccplx_real, 0 : >), (ccplx_real, 0 : <) : + <: _, (-(1), 0 : <);
+//real_zero = _ <: (ccplx_imag, 0 : > : *(PI) : /(2)), (ccplx_imag, 0 : < : _, (0, 1 : -) : * : *(PI) : /(2)) : +;
+//ccplx_angle = _ <: (real_not_zero, real_compare, real_zero : *, * : +), (ccplx_real, 0 : < : _, PI : *) : +;
+ccplx_angle = _ <: ccplx_imag, ccplx_real : atan2;
+
+ccplx_div_real = _, _ <: ccplx_real, _, ccplx_imag, _ : /, / : carte_cplx; 
+
+// cartesian complex : add, sub, mul and div
+ccplx_add = +;
+ccplx_sub = -;
+
+ccplx_mul = _, _ <: ccplx_real, ccplx_real, ccplx_imag, ccplx_imag,ccplx_real, ccplx_imag, ccplx_imag, ccplx_real : *, *, *, * : -, + : carte_cplx;
+
+ccplx_div = _, _ <: ccplx_real, ccplx_real, ccplx_imag, ccplx_imag, ccplx_imag, ccplx_real, ccplx_real, ccplx_imag, !, ccplx_real, !, ccplx_imag : *, *, *, *, square, square : +, -, + : carte_cplx, _ : ccplx_div_real;
+//ccplx_div = _, _ <: _, ccplx_conj, !, _ : ccplx_mul, ccplx_modul2 : ccplx_div_real;
+
+// Complex in polar coordinates
+polar_cplx = _, _: (_, 1 : vectorize), (_, 1 : vectorize) : #;
+pcplx_modul = _, 0 : [];
+pcplx_angle = _, 1 : [];
+pcplx_real = _ <: pcplx_modul, (pcplx_angle : cos) : *;
+pcplx_imag = _ <: pcplx_modul, (pcplx_angle : sin) : *;
+
+// conversion between cartesian complex and polar complex
+sca_abs = _ <: _, (>(0) : *(2) : -(1)) : *;
+sca2pcplx = _ <: sca_abs, (<(0) : *(PI)) : polar_cplx;
+polar2carte = _ <: pcplx_real, pcplx_imag : carte_cplx;
+carte2polar = _ <: ccplx_modul, ccplx_angle : polar_cplx;
+
+// Polar complex : add, sub, mul and div
+pcplx_add = _, _ : polar2carte, polar2carte : ccplx_add : carte2polar;
+pcplx_sub = _, _ : polar2carte, polar2carte : ccplx_sub : carte2polar;
+pcplx_mul = _, _ <: (pcplx_modul, pcplx_modul : *), (pcplx_angle, pcplx_angle : +) : polar_cplx;
+
+pcplx_div = _, _ <: (pcplx_modul, pcplx_modul : /), (pcplx_angle, pcplx_angle : -) : polar_cplx;
+
+//functions used in FFT
+real_pcplx_mul = _, ( _ <: pcplx_modul, pcplx_angle) : *, _ : polar_cplx; 
+pcplx_moduls(n) = par(i, n, pcplx_modul);
+
+