Task 6 and 7 are done!

2025.04.18/05Ex/main.c

@@ -14,8 +14,8 @@ int main(int argc, char *argv[])
 
 	if (
 			!((argc == 3) && 
-			sscanf(argv[1], "%lf", &x) == 1 &&
+			sscanf(argv[1], "%le", &x) == 1 &&
-			((sscanf(argv[2], "%lf", &eps) == 1) && eps > 0))
+			((sscanf(argv[2], "%le", &eps) == 1) && eps > 0))
 	) {
 		fprintf(stderr, "Usage: %s x eps\n", argv[0]);
 		return 1;

2025.04.18/06Ex/Makefile

@@ -0,0 +1,42 @@
+WFLAGS = -fstack-protector-all -W -Wall -Wextra -Wunused \
+-Wempty-body -Wlogical-op -Wold-style-declaration -Wmissing-parameter-type \
+-Wignored-qualifiers -Winit-self -Wshadow -Wtype-limits \
+-Wpointer-arith -Wformat-security -Wmissing-format-attribute -Wformat=1 \
+-Wdeclaration-after-statement -Wbad-function-cast -Wnested-externs \
+-Wmissing-prototypes -Wmissing-declarations -Wold-style-definition \
+-Wcast-align -Werror -pedantic -pedantic-errors -Wfloat-equal \
+-Wwrite-strings -Wno-long-long -std=gnu99 -Wstrict-prototypes \
+-Wmissing-field-initializers -Wpointer-sign
+
+CFLAGS = -std=gnu99 -mfpmath=sse -O3
+
+ifeq ($(OS),Windows_NT)
+	EXE = exe
+	CLEAN = del
+	LFLAGS = -lssp -lm
+else
+	EXE = out
+	CLEAN = rm -f
+	LFLAGS = -lm
+endif
+
+TARGET = a06.$(EXE)
+OBJ = main.o solve.o contin_func.o
+
+%.o: %.c
+	gcc $(CFLAGS) $(WFLAGS) -c $< -o $@
+
+$(TARGET): $(OBJ)
+	gcc $^ -o $@ $(LFLAGS)
+
+# Отладочная сборка (gdb)
+gdb: CFLAGS = -mfpmath=sse -std=gnu99 -g -O0
+gdb: clean $(TARGET)
+
+# Профилировочная сборка (gprof)
+prof: CFLAGS = -std=gnu99 -mfpmath=sse -pg -O3
+prof: LFLAGS = -lm -pg
+prof: clean $(TARGET)
+
+clean:
+	$(CLEAN) *.o *$(EXE)

2025.04.18/06Ex/contin_func.c

@@ -0,0 +1,38 @@
+#include "contin_func.h"
+
+#include <math.h>
+#include <float.h>
+
+double ssin (const double x, const double eps)
+{
+	double value = 0;
+	double el = x;
+	int i = 1;
+
+	while (fabs(el) - eps >= DBL_EPSILON)
+	{
+		value += el;
+
+		el *= -(x*x / (i*i + 3*i + 2));
+		i+=2;
+	}
+	
+	return value;
+}
+
+double scos (const double x, const double eps)
+{
+	double value = 0;
+	double el = 1;
+	int i = 0;
+
+	while (fabs(el) - eps >= DBL_EPSILON)
+	{
+		value += el;
+
+		el *= - (x*x / (i*i + 3*i + 2));
+		i+=2;
+	}
+	
+	return value;
+}

2025.04.18/06Ex/contin_func.h

@@ -0,0 +1,7 @@
+#ifndef CONTIN_FUNC_H
+#define CONTIN_FUNC_H
+
+double ssin (const double x, const double eps);
+double scos (const double x, const double eps);
+
+#endif

2025.04.18/06Ex/io_status.h

@@ -0,0 +1,9 @@
+#ifndef IO_STATUS_H
+#define IO_STATUS_H
+
+#define ERR_MEM	"Error: Not enough memory!"
+#define ERR_OPEN "Error: Cannot open file"
+#define ERR_READ "Error: Cannot read file"
+#define ERR_FUNC "Error: Algorithm is not applicable!"
+
+#endif

2025.04.18/06Ex/main.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
+
+#include "io_status.h"
+#include "solve.h"
+
+/* ./a.out x eps */
+int main(int argc, char *argv[])
+{
+	double x, eps, t, r1 = 0, r2 = 0;
+	int task = 6;
+
+	if (
+			!((argc == 3) && 
+			sscanf(argv[1], "%le", &x) == 1 &&
+			((sscanf(argv[2], "%le", &eps) == 1) && eps > 0))
+	) {
+		fprintf(stderr, "Usage: %s x eps\n", argv[0]);
+		return 1;
+	}
+
+	t = clock();
+	r1 = fcos(x, eps);
+	t = (clock() - t) / CLOCKS_PER_SEC;
+
+	r2 = fabs(r1 - cos(x));
+
+	printf("%s : Task = %d Result = %e Residual = %e Elapsed = %.2f\n", argv[0], task, r1, r2, t);
+
+	return 0;
+}
+

2025.04.18/06Ex/solve.c

@@ -0,0 +1,39 @@
+#include "solve.h"
+#include "contin_func.h"
+
+#include <stdlib.h>
+#include <math.h>
+#include <float.h>
+
+double fcos (double x, const double eps)
+{
+	double answer;
+	short flag = 1;
+
+	if (x - M_PI*2 >= DBL_EPSILON)
+		x = fmod(x, M_PI*2);
+
+	if (x - M_PI >= DBL_EPSILON)
+	{
+		x -= M_PI;
+		flag *= -1;
+	}
+
+	if (x - 1 >= DBL_EPSILON)
+	{
+		x -= M_PI_2;
+		flag *= -2;
+	}
+
+	if (abs(flag) == 2)
+	{
+		x /= 2;
+
+		answer = ((flag > 0) - (flag < 0)) * (2 * ssin(x, eps) * scos(x, eps));
+	} else
+		answer = flag * scos(x, eps);
+
+	return answer;
+}
+
+

2025.04.18/06Ex/solve.h

@@ -0,0 +1,6 @@
+#ifndef SOLVE_H
+#define SOLVE_H
+
+double fcos (double x, const double eps);
+
+#endif

2025.04.18/07Ex/Makefile

@@ -0,0 +1,42 @@
+WFLAGS = -fstack-protector-all -W -Wall -Wextra -Wunused \
+-Wempty-body -Wlogical-op -Wold-style-declaration -Wmissing-parameter-type \
+-Wignored-qualifiers -Winit-self -Wshadow -Wtype-limits \
+-Wpointer-arith -Wformat-security -Wmissing-format-attribute -Wformat=1 \
+-Wdeclaration-after-statement -Wbad-function-cast -Wnested-externs \
+-Wmissing-prototypes -Wmissing-declarations -Wold-style-definition \
+-Wcast-align -Werror -pedantic -pedantic-errors -Wfloat-equal \
+-Wwrite-strings -Wno-long-long -std=gnu99 -Wstrict-prototypes \
+-Wmissing-field-initializers -Wpointer-sign
+
+CFLAGS = -std=gnu99 -mfpmath=sse -O3
+
+ifeq ($(OS),Windows_NT)
+	EXE = exe
+	CLEAN = del
+	LFLAGS = -lssp -lm
+else
+	EXE = out
+	CLEAN = rm -f
+	LFLAGS = -lm
+endif
+
+TARGET = a07.$(EXE)
+OBJ = main.o solve.o contin_func.o
+
+%.o: %.c
+	gcc $(CFLAGS) $(WFLAGS) -c $< -o $@
+
+$(TARGET): $(OBJ)
+	gcc $^ -o $@ $(LFLAGS)
+
+# Отладочная сборка (gdb)
+gdb: CFLAGS = -mfpmath=sse -std=gnu99 -g -O0
+gdb: clean $(TARGET)
+
+# Профилировочная сборка (gprof)
+prof: CFLAGS = -std=gnu99 -mfpmath=sse -pg -O3
+prof: LFLAGS = -lm -pg
+prof: clean $(TARGET)
+
+clean:
+	$(CLEAN) *.o *$(EXE)

2025.04.18/07Ex/contin_func.c

@@ -0,0 +1,21 @@
+#include "contin_func.h"
+
+#include <math.h>
+#include <float.h>
+
+double sexp (const double x, const double eps)
+{
+	double value = 1;
+	double monom = x;
+	int i = 1;
+
+	while (monom - eps >= DBL_EPSILON)
+	{
+		value += monom;
+
+		i++;
+		monom *= x/i;
+	}
+
+	return value;
+}

2025.04.18/07Ex/contin_func.h

@@ -0,0 +1,6 @@
+#ifndef CONTIN_FUNC_H
+#define CONTIN_FUNC_H
+
+double sexp (const double x, const double eps);
+
+#endif

2025.04.18/07Ex/io_status.h

@@ -0,0 +1,9 @@
+#ifndef IO_STATUS_H
+#define IO_STATUS_H
+
+#define ERR_MEM	"Error: Not enough memory!"
+#define ERR_OPEN "Error: Cannot open file"
+#define ERR_READ "Error: Cannot read file"
+#define ERR_FUNC "Error: Algorithm is not applicable!"
+
+#endif

2025.04.18/07Ex/main.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
+
+#include "io_status.h"
+#include "solve.h"
+
+/* ./a.out x eps */
+int main(int argc, char *argv[])
+{
+	double x, eps, t, r1 = 0, r2 = 0;
+	int task = 7;
+
+	if (
+			!((argc == 3) && 
+			sscanf(argv[1], "%le", &x) == 1 &&
+			((sscanf(argv[2], "%le", &eps) == 1) && eps > 0))
+	) {
+		fprintf(stderr, "Usage: %s x eps\n", argv[0]);
+		return 1;
+	}
+
+	t = clock();
+	r1 = fexp(x, eps);
+	t = (clock() - t) / CLOCKS_PER_SEC;
+
+	r2 = fabs(r1 - exp(x));
+
+	printf("%s : Task = %d Result = %e Residual = %e Elapsed = %.2f\n", argv[0], task, r1, r2, t);
+
+	return 0;
+}
+

2025.04.18/07Ex/solve.c

@@ -0,0 +1,31 @@
+#include "solve.h"
+#include "contin_func.h"
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <math.h>
+#include <float.h>
+
+double fexp (double x, const double eps)
+{
+	double integral, fractal, answer = 1;
+	bool is_negative = false;
+
+	if (x < DBL_EPSILON)
+	{
+		is_negative = true;
+		x = -x;
+	}
+
+	integral = floor(x);
+	fractal = x - integral;
+
+	for (double i = 0; (integral - i) > DBL_EPSILON; ++i)
+		answer *= M_E;
+
+	answer *= sexp(fractal, eps);
+	if (is_negative)
+		answer = 1. / answer;
+
+	return answer;
+}

2025.04.18/07Ex/solve.h

@@ -0,0 +1,6 @@
+#ifndef SOLVE_H
+#define SOLVE_H
+
+double fexp (double x, const double eps);
+
+#endif

2025.04.18/dist/Ulyanov_MT/task07.c

@@ -30,8 +30,13 @@ int main(int argc, char* argv[])
   
 double solve7(double x, double eps)
   {
-  int i = 1, intg;
+  int sign = 1, i = 1, intg;
   double mult = 1, el = 1, res = 0;
+  if (x < 0) 
+      {
+      sign = -1;
+      x = fabs(x);
+      }
   intg = floor(x);
   x = x - intg;
   while (fabs(el) >= eps)
@@ -44,5 +49,6 @@ double solve7(double x, double eps)
       {
       mult *= M_E;
       }
-  return mult * res;
+  if (sign == 1) return mult * res;
+  else return 1 / (mult * res);
   }