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P_header.c
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#include "P_header.h"
/*
* P_header.c, implementation file
*
* P232, a C programming language preprocessor to perform arithmetic operations on matrices.
* Yeditepe University CSE232 course group term project.
*/
// Define global variables
int P_dot;
int P_sum;
int P_aver;
struct ArrayTable AT[20]; // max. 20 arrays
struct ParseTable PT; // Creates a C declaration for an integer array from array table data.
char* declaration(int array_table_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[array_table_index];
if (A->dim == 1 && A->size1[0] == '\0' || A->dim == 2 && (A->size1[0] == '\0' || A->size2[0] == '\0'))
return "Error: Arrays size values must be filled.";
else if (A->dim == 1)
sprintf(extended, "int %s[%s];", A->name, A->size1);
else
sprintf(extended, "int %s[%s][%s];", A->name, A->size1, A->size2);
return extended;
}
// Reads array elements from a file into the specified array from the array table.
char* read(int array_table_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[array_table_index];
if (A->dim == 1)
sprintf(extended,
"FILE* file = fopen(\"%s\", \"r\");\n"
"int num, count = 0;\n"
"while (count < %s && fscanf(file, \"%%d\", &num) == 1) {\n"
"\t%s[count++] = num;\n"
"}\n"
"fclose(file);\n",
PT.rhs1,
A->size1,
A->name
);
else
sprintf(extended,
"FILE* file = fopen(\"%s\", \"r\");\n"
"int num, count = 0;\n"
"for (int i = 0; i < %s && count < %s * %s; i++) {\n"
"\tfor (int j = 0; j < %s && fscanf(file, \"%%d\", &num) == 1; j++) {\n"
"\t\t%s[i][j] = num;\n"
"\t\tcount++;\n"
"\t}\n"
"}\n"
"fclose(file);\n",
PT.rhs1,
AT[array_table_index].size1,
AT[array_table_index].size1,
AT[array_table_index].size2,
AT[array_table_index].size2,
AT[array_table_index].name
);
return extended;
}
// Takes two arrays source and destination,then copies source to destination.
char* copy(int Array_S , int Array_D) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[Array_S];
struct ArrayTable* B = &AT[Array_D];
if (A->dim != B->dim)
return "Error: Arrays should have same dimension value.";
if (strcmp(A->size1, B->size1) != 0)
return "Error: Arrays must have the same length.";
if(A->dim == 1)
sprintf(extended,
"for (int i = 0; i < %s; i++) {\n"
"\t%s[i] = %s[i];\n"
"}\n",
A->size1,
B->name,
A->name);
else if (A->dim == 2) {
if (strcmp(A->size2, B->size2) != 0)
return "Error: Arrays must have the same length.";
sprintf(extended,
"for (int i = 0; i < %s; i++) {\n"
"\tfor (int j = 0; j < %s; j++) {\n"
"\t\t%s[i][j] = %s[i][j];\n"
"\t}\n"
"}\n",
A->size1,
A->size2,
B->name,
A->name);
}
return extended;
}
//This code represents a C function that initializes a table array with a specific size and value. The function is called with the index of the array table and the initialization value.
char* initialize(int array_table_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[array_table_index];
if (A->dim == 1)
sprintf(extended,
"for (int i = 0; i < %s; i++) {\n"
"\t%s[i] = %s;\n"
"}\n",
A->size1,
A->name,
PT.rhs1);
else
sprintf(extended,
"for (int i = 0; i < %s; i++) {\n"
"\tfor (int j = 0; j < %s; j++) {\n"
"\t\t%s[i][j] = %s;\n"
"\t}\n"
"}\n",
A->size1,
A->size2,
A->name,
PT.rhs1);
return extended;
}
// This code represents a C function that prints an array with a specific size and value. The function is called with the index of the array table.
char* print(int array_table_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[array_table_index];
if(A->dim == 1)
sprintf(extended,
"printf(\"[\");\n"
"for (int i = 0; i < %s-1; i++) {\n"
"\tprintf(\"%%d, \", %s[i]);\n"
"}\n"
"printf(\"%%d]\", %s[%s-1]);\n" ,
A->size1,
A->name,
A->name,
A->size1);
else if (A->dim == 2)
sprintf(extended,
"printf(\"[\");\n"
"for (int i = 0; i < %s; i++) {\n"
"\tprintf(\"[\");\n"
"\tfor (int j = 0; j < %s-1; j++) {\n"
"\t\tprintf(\"%%d, \", %s[i][j]);\n" //ASSUME ARRAY IS INT ARRAY
"\t}\n"
"\tprintf(\"%%d]\", %s[i][%s-1]);\n"
"}\n"
"printf(\"]\");\n",
A->size1,
A->size2,
A->name,
A->name,
A->size2);
return extended;
}
// Takes two 1D matrices, calculates their dot product and assigns it to the environmental variable P_dot
char* matrix_dot_product(int A_index , int B_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[A_index];
struct ArrayTable* B = &AT[B_index];
if (A->dim != 1 || B->dim != 1)
return "Error: All arrays must be 1D for array for dot product.";
if (strcmp(A->size1, B->size1) != 0)
return "Error: Arrays A and B must have the same length for for dot product.";
sprintf(extended,
"P_dot = 0;\n"
"for (int i = 0; i < %s; i++) {\n"
"\tP_dot += %s[i] + %s[i];\n"
"}\n",
A->size1,
A->name, B->name);
return extended;
}
// Takes two matrices, adds them accordingly and assigns the result to another matrix
char* matrix_addition(int C_index, int A_index , int B_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[A_index];
struct ArrayTable* B = &AT[B_index];
struct ArrayTable* C = &AT[C_index];
if (A->dim == 1 && B->dim == 1 && C->dim == 1) {
if ((strcmp(A->size1, B->size1) != 0)||
(strcmp(A->size1, B->size1) != 0) || (strcmp(A->size1, C->size1) != 0)) {
return "Error: Arrays A , B and C must have the same length for array addition.";
}
}
else if (A->dim == 2 && B->dim == 2 && C->dim == 2){
sprintf(extended,
"for (int i = 0; i < %s; i++) {\n"
"\t%s[i] = %s[i] + %s[i];\n"
"}\n",
A->size1,
C->name, A->name, B->name);
if ((strcmp(A->size1, B->size1) != 0) ||
(strcmp(A->size1, C->size1) != 0) ||
(strcmp(A->size2, B->size2) != 0) ||
(strcmp(A->size2, C->size2) != 0)) {
return "Error: Arrays A , B and C must have the same length for array addition.";
}
sprintf(extended,
"for (int i = 0; i < %s; i++) {\n"
"\tfor(int j = 0; j < %s; j++){\n"
"\t\t%s[i][j] = %s[i][j] + %s[i][j];\n"
"\t}\n"
"}\n",
A->size1,
A->size2,
C->name, A->name, B->name);
} else {
return "Error: All arrays must have the same dimensions for array addition.";
}
return extended;
}
// Takes two matrices, multiplies them accordingly and assigns the result to another matrix
char* matrix_multiplication(int C_index, int A_index , int B_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[A_index];
struct ArrayTable* B = &AT[B_index];
struct ArrayTable* C = &AT[C_index];
if (A->dim == 2 && B->dim == 2 && C->dim == 2){
if ((strcmp(A->size1, C->size1) != 0) ||
(strcmp(A->size2, B->size1) != 0) ||
(strcmp(B->size2, C->size2) != 0)) {
return "Error: Arrays A , B and C must have axb bxc axc respectively sizes for array multiplication.";
} else {
sprintf(extended,
"for (int i = 0; i < %s; i++){\n"
"\tfor (int j = 0; j < %s; j++){\n"
"\t\t%s[i][j] = 0;\n"
"\t\tfor (int k = 0; k < %s; k++){\n"
"\t\t\t%s[i][j] += %s[i][k] * %s[k][j];\n"
"\t\t}\n"
"\t}\n"
"}\n",
C->size1,
C->size2,
C->name,
A->size2,
C->name, A->name, B->name);
}
} else {
return "Error: Arrays A , B and C must have the 2D for array multiplication.";
}
return extended;
}
// Takes an array or a matrix, sums all its elements and assign the result to a variable called P_sum.
char* reduction_operations_sum(int A_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[A_index];
if(A->dim == 1)
sprintf(extended,
"P_sum = 0;\n"
"for(int i = 0; i < %s; i++){\n"
"\tP_sum += %s[i];\n"
"}\n",
A->size1,
A->name);
else if(A->dim == 2)
sprintf(extended,
"P_sum = 0;\n"
"for(int i = 0; i < %s; i++){\n"
"\tfor(int j = 0; j < %s; j++){\n"
"\t\tP_sum += %s[i][j];\n"
"\t}\n"
"}\n",
A->size1,
A->size2,
A->name);
else
return "Error: Unsupported dimension for sum operation.";
return extended;
}
// Takes an array or a matrix, sums all its elements and divides its number of elements and assign the result to a variable called P_aver.
char* reduction_operations_aver(int A_index) {
char* extended = malloc(1024);
struct ArrayTable* A = &AT[A_index];
if(A->dim == 1)
sprintf(extended,
"P_aver = 0;\n"
"for(int i = 0; i < %s; i++){\n"
"\tP_aver += %s[i];\n"
"}\n"
"P_aver /= %s;\n",
A->size1,
A->name,
A->size1);
else if(A->dim == 2)
sprintf(extended,
"P_aver = 0;\n"
"for(int i = 0; i < %s; i++){\n"
"\tfor(int j = 0; j < %s; j++){\n"
"\t\tP_aver += %s[i][j];\n"
"\t}\n"
"}\n"
"P_aver /= (%s * %s);\n",
A->size1,
A->size2,
A->name,
A->size1,
A->size2);
else
return "Error: Unsupported dimension for average operation.";
return extended;
}