8 files changed, 0 insertions, 486 deletions
diff --git a/Semestr 3/anm/cordic/CORDICtable.c b/Semestr 3/anm/cordic/CORDICtable.c
deleted file mode 100644
index f222d08..0000000
--- a/Semestr 3/anm/cordic/CORDICtable.c
+++ /dev/null
@@ -1,21 +0,0 @@
-//CORDIC, 21 bits, 18 iterations
-// 1.0 = 262144.000000 multiplication factor
-// A = 1.743279 convergence angle (limit is 1.7432866 = 99.9deg)
-// F = 1.646760 gain (limit is 1.64676025812107)
-// 1/F = 0.607253 inverse gain (limit is 0.607252935008881)
-// pi = 3.141593 (3.1415926536897932384626)
-
-#define CORDIC_A 1.743279 // CORDIC convergence angle A
-#define CORDIC_F 0x00069648 // CORDIC gain F
-#define CORDIC_1F 0x00026DD4 // CORDIC inverse gain 1/F
-#define CORDIC_HALFPI 0x0006487F
-#define CORDIC_PI 0x000C90FE
-#define CORDIC_TWOPI 0x001921FB
-#define CORDIC_MUL 262144.000000 // CORDIC multiplication factor M = 2^18
-#define CORDIC_MAXITER 18
-
-int CORDIC_ZTBL[] = {
- 0x0003243F, 0x0001DAC6, 0x0000FADC, 0x00007F57, 0x00003FEB, 0x00001FFD, 0x00001000, 0x00000800, 
- 0x00000400, 0x00000200, 0x00000100, 0x00000080, 0x00000040, 0x00000020, 0x00000010, 0x00000008, 
- 0x00000004, 0x00000002 };
-
diff --git a/Semestr 3/anm/cordic/cordic b/Semestr 3/anm/cordic/cordic
deleted file mode 100644
index cb593c0..0000000
--- a/Semestr 3/anm/cordic/cordic
+++ /dev/null
diff --git a/Semestr 3/anm/cordic/cordic.cpp b/Semestr 3/anm/cordic/cordic.cpp
deleted file mode 100644
index b0dfd39..0000000
--- a/Semestr 3/anm/cordic/cordic.cpp
+++ /dev/null
@@ -1,189 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-//#define M_PI 3.1415926536897932384626
-int main(int argc, char **argv)
-{
-  FILE *f;
-  char tname[50], cname[10];
-  int n, n2, mp2, niter, bits, t;
-  double F, A, mul, tmul; // CORDIC gain, convergence angle, multiplication factor
-  printf("0)circular, 1)linear, 2)hyperbolic? ");
-  scanf("%d", &t);
-  switch (t)
-  {
-  case 0:
-    sprintf(cname, "%s", "");
-    break;
-  case 1:
-    sprintf(cname, "%s", "_LIN");
-    break;
-  case 2:
-    sprintf(cname, "%s", "_HYPER");
-    break;
-  }
-  sprintf(tname, "CORDICtable%s.c", cname);
-  if (NULL == (f = fopen(tname, "wt")))
-  {
-    printf("cannot write to %s\n", tname);
-    return 0;
-  }
-
-  printf("number of bits for mantissa (e.g. 30)? ");
-  scanf("%d", &bits);
-  printf("0) mul factor is 2^n (easier output scaling), or\n"
-         "1) 2pi is 2^n (easier implementation)\n ? ");
-  scanf("%d", &mp2);
-  printf("suggested multiplication factor ");
-  if (mp2 == 0)
-  {
-    tmul = (double)(1 << (bits - 3));
-    printf("2^%d = %f\n", bits - 3, tmul);
-  }
-  else
-  {
-    tmul = (double)(1 << (bits - 2)) / M_PI;
-    printf("2^%d/pi = %f\n", bits - 2, tmul);
-  }
-  printf("multiplication factor (0 for suggested)? ");
-  scanf("%lf", &mul);
-  if (mul < 0.1)
-  {
-    mul = tmul;
-    printf("%f\n", mul);
-  }
-  else
-    mp2 = -1; // custom mul factor
-  switch (t)
-  {
-  case 0:
-    for (n = 0; n < bits; n++)
-      if ((int)round(atan(pow(2.0, (double)(-n))) * mul) == 0)
-        break;
-    break;
-  case 1:
-    for (n = 0; n < bits; n++)
-      if ((int)round((pow(2.0, (double)(-n))) * mul) == 0)
-        break;
-    break;
-  case 2:
-    for (n = 1, n2 = 4; n < bits;)
-    {
-      if ((int)round(atanh(pow(2.0, (double)(-n))) * mul) == 0)
-        break;
-      if (n == n2)
-        n2 = 3 * n + 1;
-      else
-        n++;
-    }
-    break;
-  }
-  printf("iterations (up to %d)? ", n);
-  scanf("%d", &niter);
-
-  F = 1.0;
-  A = 0.0;
-  switch (t)
-  {
-  case 0:
-    for (n = 0; n < niter; n++)
-    {
-      F = F * sqrt(1 + pow(2.0, -2.0 * n));
-      A += atan(pow(2.0, (double)(-n)));
-    }
-    break;
-  case 1:
-    for (n = 0; n < niter; n++)
-    {
-      F = F * sqrt(1);
-      A += (pow(2.0, (double)(-n)));
-    }
-    break;
-  case 2:
-    for (n = 1, n2 = 4; n < niter;)
-    {
-      F = F * sqrt(1 - pow(2.0, -2.0 * n));
-      A += atanh(pow(2.0, (double)(-n)));
-      if (n == n2)
-        n2 = 3 * n + 1;
-      else
-        n++;
-    }
-    break;
-  }
-
-  fprintf(f, "//CORDIC%s, %d bits, %d iterations\n", cname, bits, niter);
-  fprintf(f, "// 1.0 = %f multiplication factor\n", mul);
-  switch (t)
-  {
-  case 0:
-    fprintf(f, "// A = %lf convergence angle "
-               "(limit is 1.7432866 = 99.9deg)\n",
-            A);
-    fprintf(f, "// F = %lf gain (limit is 1.64676025812107)\n", F);
-    fprintf(f, "// 1/F = %lf inverse gain (limit is 0.607252935008881)\n", 1.0 / F);
-    break;
-  case 1:
-    fprintf(f, "// A = %lf convergence angle (limit is 2)\n", A);
-    fprintf(f, "// F = %lf gain (limit is 1.0)\n", F);
-    fprintf(f, "// 1/F = %lf inverse gain (limit is 1.0)\n", 1.0 / F);
-    break;
-  case 2:
-    fprintf(f, "// A = %lf convergence angle "
-               "(limit is 1.1181730 = 64.0deg)\n",
-            A);
-    fprintf(f, "// F = %lf gain (limit is 0.82978162013890)\n", F);
-    fprintf(f, "// 1/F = %lf inverse gain (limit is 1.20513635844646)\n", 1.0 / F);
-    break;
-  }
-  fprintf(f, "// pi = %lf (3.1415926536897932384626)\n", M_PI);
-  fprintf(f, "\n");
-  fprintf(f, "#define CORDIC%s_A %f // CORDIC convergence angle A\n", cname, A);
-  fprintf(f, "#define CORDIC%s_F 0x%08X // CORDIC gain F\n",
-          cname, (int)round(mul * F));
-  fprintf(f, "#define CORDIC%s_1F 0x%08X // CORDIC inverse gain 1/F\n",
-          cname, (int)round(mul / F));
-  fprintf(f, "#define CORDIC%s_HALFPI 0x%08X\n", cname, (int)round(mul * (M_PI / 2.0)));
-  fprintf(f, "#define CORDIC%s_PI 0x%08X\n", cname, (int)round(mul * (M_PI)));
-  fprintf(f, "#define CORDIC%s_TWOPI 0x%08X\n", cname, (int)round(mul * (2.0 * M_PI)));
-  fprintf(f, "#define CORDIC%s_MUL %f // CORDIC multiplication factor M", cname, mul);
-  switch (mp2)
-  {
-  case 0:
-    fprintf(f, " = 2^%d\n", bits - 3);
-    break;
-  case 1:
-    fprintf(f, " = 2^%d/pi\n", bits - 2);
-    break;
-  default:
-    fprintf(f, "\n");
-    break;
-  }
-  fprintf(f, "#define CORDIC%s_MAXITER %d\n\n", cname, niter);
-  fprintf(f, "int CORDIC%s_ZTBL[] = {", cname);
-  for (n = 0; n < niter; n++)
-  {
-    if ((n % 8) == 0)
-      fprintf(f, "\n ");
-    switch (t)
-    {
-    case 0:
-      fprintf(f, "0x%08X", (int)round(atan(pow(2.0, (double)(-n))) * mul));
-      break;
-    case 1:
-      fprintf(f, "0x%08X", (int)round((pow(2.0, (double)(-n))) * mul));
-      break;
-    case 2:
-      n = n == 0 ? 1 : n;
-      fprintf(f, "0x%08X", (int)round(atanh(pow(2.0, (double)(-n))) * mul));
-      break;
-    }
-    if (n < (niter - 1))
-      fprintf(f, ", ");
-    else
-      fprintf(f, " ");
-  }
-  fprintf(f, "};\n\n");
-  fclose(f);
-  printf("table written to %s\n", tname);
-  return 0;
-}
diff --git a/Semestr 3/anm/cordic/cordic.jl b/Semestr 3/anm/cordic/cordic.jl
deleted file mode 100644
index 9509fb2..0000000
--- a/Semestr 3/anm/cordic/cordic.jl
+++ /dev/null
@@ -1,81 +0,0 @@
-using Printf
-
-global ITERATIONS = 30
-global CORDIC_MUL_POW = 30
-global CORDIC_MUL = 2.0^CORDIC_MUL_POW
-global CORDIC_ATANS
-global CORDIC_F
-global CORDIC_F_INV
-
-CORDIC_ATANS = [843314857, 497837829, 263043837, 133525159, 67021687, 33543516, 16775851, 8388437, 4194283, 2097149, 1048576, 524288, 262144, 131072, 65536, 32768, 16384, 8192, 4096, 2048, 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2]
-CORDIC_F = 1768195363
-CORDIC_F_INV = 652032874
-
-function preprocess_atan(iterations)
-    global CORDIC_MUL
-    atan2pow = Array{Float64}(undef, iterations)
-    @printf("CORDIC_ATANS = [")
-    for i in 1:iterations
-        atan2pow[i] = round(atan(1.0 / Float64(BigInt(2)^(i - 1))) * CORDIC_MUL)
-        @printf("%d", atan2pow[i])  
-        if i < iterations
-            @printf(", ")
-        end
-    end
-    @printf("]\n")
-end
-
-function preprocess_scaling_factor(iterations)
-    # @printf("Preprocessing scaling factor, %d iterations\n", iterations)
-    CORDIC_F = 1.0
-    for i in 0:iterations
-        CORDIC_F *= sqrt(1. + 1. / Float64(BigInt(2)^(2 * i)))
-    end
-    # @printf("Scaling factor: %.16f\n", F)
-    @printf("CORDIC_F = %d\nCORDIC_F_INV = %d\n", round(CORDIC_F * CORDIC_MUL), round(CORDIC_MUL / CORDIC_F))
-end
-
-function approx_trig(x, iterations)
-    global CORDIC_ATANS
-    global CORDIC_F_INV
-    X = CORDIC_F_INV
-    Y = 0
-    Z = round(x * CORDIC_MUL)
-    s = 1
-    for i in 0:(iterations - 1)
-        println(X, " ", Y)
-
-        tempX = X
-        if Z == 0
-            break
-        end
-        if Z >= 0
-            X -= s * (Y >> i)
-            Y += s * (tempX >> i)
-            Z -= s * CORDIC_ATANS[i + 1]
-        else
-            X += s * (Y >> i)
-            Y -= s * (tempX >> i)
-            Z += s * CORDIC_ATANS[i + 1]
-        end
-    end
-
-    println(X, " ", Y)
-    return (Float64(X) / CORDIC_MUL, Float64(Y) / CORDIC_MUL)
-end
-
-# works only for real numbers
-function approx_sin(x, y)
-    return (approx_trig(x, ITERATIONS)[2], 0)
-end
-
-# works only for real numbers
-function approx_cos(x, y)
-    return (approx_trig(x, ITERATIONS)[1], 0)
-end
-
-function main()
-    println("Preprocessing CORDIC constants.")
-    preprocess_atan(CORDIC_MUL_POW)
-    preprocess_scaling_factor(CORDIC_MUL_POW)
-end
diff --git a/Semestr 3/anm/cordic/csin b/Semestr 3/anm/cordic/csin
deleted file mode 100644
index 49d3cfb..0000000
--- a/Semestr 3/anm/cordic/csin
+++ /dev/null
diff --git a/Semestr 3/anm/cordic/csin.cpp b/Semestr 3/anm/cordic/csin.cpp
deleted file mode 100644
index bcc9af4..0000000
--- a/Semestr 3/anm/cordic/csin.cpp
+++ /dev/null
@@ -1,49 +0,0 @@
-#include "CORDICtable.c"
-#include <iostream>
-// angle is radians multiplied by CORDIC multiplication factor M
-// modulus can be set to CORDIC inverse gain 1/F to avoid post-division
-void CORDICsincos(int a, int m, int *s, int *c)
-{
-  int k, tx, x = m, y = 0, z = a, fl = 0;
-  if (z > +CORDIC_HALFPI)
-  {
-    fl = +1;
-    z = (+CORDIC_PI) - z;
-  }
-  else if (z < -CORDIC_HALFPI)
-  {
-    fl = +1;
-    z = (-CORDIC_PI) - z;
-  }
-  for (k = 0; k < CORDIC_MAXITER; k++)
-  {
-    std::cout << x << " " << y << " " << z << "\n";
-    tx = x;
-    if (z >= 0)
-    {
-      x -= (y >> k);
-      y += (tx >> k);
-      z -= CORDIC_ZTBL[k];
-    }
-    else
-    {
-      x += (y >> k);
-      y -= (tx >> k);
-      z += CORDIC_ZTBL[k];
-    }
-  }
-  if (fl)
-    x = -x;
-  *c = x; // m*cos(a) multiplied by gain F and factor M
-  *s = y; // m*sin(a) multiplied by gain F and factor M
-}
-
-int main()
-{
-  double x;
-  std::cin >> x;
-  int sinus, cosinus;
-  CORDICsincos(x * CORDIC_MUL, CORDIC_1F, &sinus, &cosinus);
-  std::cout << sinus << " " << cosinus << "\n";
-  std::cout << (double)sinus / (double)CORDIC_MUL << " " << (double)cosinus / (double)CORDIC_MUL << "\n";
-}
-\ No newline at end of file
diff --git a/Semestr 3/anm/cordic/taylor.jl b/Semestr 3/anm/cordic/taylor.jl
deleted file mode 100644
index 5d2d26d..0000000
--- a/Semestr 3/anm/cordic/taylor.jl
+++ /dev/null
@@ -1,103 +0,0 @@
-module taylor
-using Base
-using Printf
- 
-ITER = 12
-HYPERBOLIC_MAX = 0.2
- 
-function series(x, parity, change_sign, iterations)
-    elements = ones(Float64, 2 * iterations)
-    res = 0.0
-    i = 2
-    while i <= 2 * iterations + parity - 2
-        elements[i + 1] = elements[i] / i
-        if change_sign && (i % 2 == parity)
-            elements[i + 1] = -elements[i + 1]
-        end -
-        i += 1
-    end
-    i = 2 * iterations + parity - 2
-    while i >= parity
-        res *= x * x
-        res += elements[i + 1]
-        i -= 2
-    end
-    if parity == 1
-        res *= x
-    end
-    return res
-end
- 
-function real_sin(r, iterations)
-    r = r - floor(r / (2 * pi)) * 2 * pi
-    if r > pi
-        return -real_sin(r - pi, iterations)
-    end
-    if r > pi / 2
-        return real_cos(r - pi / 2, iterations)
-    end
-    if r > pi / 4
-        return real_cos(pi / 2 - r, iterations)
-    end
- 
-    return series(r, 1, true, iterations)
-end
- 
-function real_cos(r, iterations)
-    r = r - floor(r / (2 * pi)) * 2 * pi
-    if r > pi
-        return -real_cos(r - pi, iterations)
-    end
-    if r > pi / 2
-        return -real_sin(r - pi / 2, iterations)
-    end
-    if r > pi / 4
-        return real_sin(pi / 2 - r, iterations)
-    end
- 
-    return series(r, 0, true, iterations)
-end
- 
-function real_sinh(r, iterations)
-    if abs(r) > HYPERBOLIC_MAX
-        return 2 * real_sinh(r / 2, iterations) * real_cosh(r / 2, iterations)
-    end
-    return series(r, 1, false, iterations)
-end
- 
-function real_cosh(r, iterations)
-    if abs(r) > HYPERBOLIC_MAX
-        s = real_sinh(r / 2, iterations)
-        c = real_cosh(r / 2, iterations)
-        return s * s + c * c
-    end
-    return series(r, 0, false, iterations)
-end
- 
-function complex_sin(a, b, iterations)
-    return (real_sin(a, iterations) * real_cosh(b, iterations), 
-            real_cos(a, iterations) * real_sinh(b, iterations)) 
-end
- 
-function complex_cos(a, b, iterations)
-    return (real_cos(a, iterations) * real_cosh(b, iterations),
-            -real_sin(a, iterations) * real_sinh(b, iterations))
-end
- 
-# c = a + bi
-function csin(a, b)
-    return complex_sin(a, b, ITER)
-end
- 
-function ccos(a, b)
-    return complex_cos(a, b, ITER)
-end
- 
-function rsinh(r)
-    return real_sinh(r, ITER)
-end
- 
-function rcosh(r)
-    return real_cosh(r, ITER)
-end
-end
-\ No newline at end of file
diff --git a/Semestr 3/anm/cordic/trig.jl b/Semestr 3/anm/cordic/trig.jl
deleted file mode 100644
index bf1dc2c..0000000
--- a/Semestr 3/anm/cordic/trig.jl
+++ /dev/null
@@ -1,43 +0,0 @@
-include("cordic.jl")
-include("taylor.jl")
-using Printf
-
-# preprocessing
-cordic.main()
-
-function rel_error(x, y)
-    return abs((x - y) / y)
-end
-
-function test_real_sin(arg, trig_func)
-    @printf("Testing relative error for function %s and argument %f.\n", String(Symbol(trig_func)), arg)
-    res = trig_func(arg, 0)
-    real_res = sin(arg)
-    @printf("Result: %.50f\n", res[1])
-    @printf("LibRes: %.50F\n", real_res)
-    @printf("Relative error: %e\n", rel_error(res[1], real_res))
-end
-
-function test_complex_sin(arg_real, arg_imag, trig_func)
-    @printf("Testing relative error for function %s and argument %f + %f i.\n", String(Symbol(trig_func)), arg_real, arg_imag)
-    res = trig_func(arg_real, arg_imag)
-    real_res = sin(arg_real + arg_imag * im)
-    @printf("Result: %.50f + %.50f i\n", res[1], res[2])
-    @printf("LibRes: %.50f + %.50f i\n", real(real_res), imag(real_res))
-    @printf("Relative error: %e, %e\n", rel_error(res[1], real(real_res)), rel_error(res[2], imag(real_res)))
-end
-
-test_real_sin(0.5, taylor.csin)
-test_real_sin(0.5, cordic.approx_sin)
-
-
-test_real_sin(0.001, taylor.csin)
-test_real_sin(0.001, cordic.approx_sin)
-
-
-test_real_sin(0.1, taylor.csin)
-test_real_sin(0.1, cordic.approx_sin)
-
-
-# test_complex_sin(0.5 + 2pi, 0.5, taylor.csin)
-# test_complex_sin(100, 0.5, taylor.csin)
-\ No newline at end of file