Imanol-Mikel Barba Sabariego / digital · Commits

Commit bba49d9ed929d84140afa5141137a8771a69f660

Authored by Imanol-Mikel Barba Sabariego
1 parent 61a62015

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Showing 12 changed files with 251 additions and 28 deletions
arith/Makefile
  View file @bba49d9
1   -TARGETS = adder substractor multiplier divider negator comparator
  1 +TARGETS = adder substractor multiplier divider negator comparator shifter
2 2  
3 3 .PHONY: all clean
4 4  
... ... @@ -18,4 +18,6 @@ divider:
18 18 negator:
19 19 gcc -I../common/ ../common/auxiliar.c negator.c -o negator
20 20 comparator:
21   - gcc -I../common/ ../common/auxiliar.c comparator.c -o comparator
22 21 \ No newline at end of file
  22 + gcc -I../common/ ../common/auxiliar.c comparator.c -o comparator
  23 +shifter:
  24 + gcc -I../common/ ../common/auxiliar.c shifter.c -o shifter
23 25 \ No newline at end of file
... ...
arith/adder.c
  View file @bba49d9
... ... @@ -14,8 +14,6 @@ int check_length(char **inputs, uint8_t num_inputs)
14 14  
15 15 int main(int argc, char **argv)
16 16 {
17   - int i;
18   - int pos;
19 17 if(argc != 2)
20 18 {
21 19 error();
... ... @@ -41,9 +39,9 @@ int main(int argc, char **argv)
41 39 error();
42 40 }
43 41 int a,b,carry_in,c;
44   - a = bin2dec(inputs[0]);
45   - b = bin2dec(inputs[1]);
46   - carry_in = bin2dec(inputs[2]);
  42 + a = bin2udec(inputs[0]);
  43 + b = bin2udec(inputs[1]);
  44 + carry_in = bin2udec(inputs[2]);
47 45 c = a+b+carry_in;
48 46 char *result = dec2bin(c,input_length+1);
49 47 printf("%s,%c",result+1,result[0]);
... ...
arith/bit_adder.c 0 → 100644
  View file @bba49d9
  1 +#include <stdio.h>
  2 +#include <string.h>
  3 +#include "auxiliar.h"
  4 +
  5 +int main(int argc, char **argv)
  6 +{
  7 + if(argc != 2)
  8 + {
  9 + error();
  10 + }
  11 + char *input = argv[1];
  12 + if(!strcmp(input,"error"))
  13 + {
  14 + error();
  15 + }
  16 + char **inputs = comma_separate(input);
  17 + if(inputs == NULL)
  18 + {
  19 + error();
  20 + }
  21 + int num_inputs = num_occurrences(input,',');
  22 + if(num_inputs != 1)
  23 + {
  24 + error();
  25 + }
  26 + int input_length = strlen(inputs[0]);
  27 + int num = bin2dec(inputs[0]);
  28 + num *= -1;
  29 + char *result = dec2bin(num,input_length);
  30 + printf("%s",result);
  31 + free(result);
  32 + free_mem(inputs,num_inputs);
  33 + return 0;
  34 +}
... ...
arith/bit_finder.c 0 → 100644
  View file @bba49d9
  1 +#include <stdio.h>
  2 +#include <string.h>
  3 +#include "auxiliar.h"
  4 +
  5 +int main(int argc, char **argv)
  6 +{
  7 + if(argc != 2)
  8 + {
  9 + error();
  10 + }
  11 + char *input = argv[1];
  12 + if(!strcmp(input,"error"))
  13 + {
  14 + error();
  15 + }
  16 + char **inputs = comma_separate(input);
  17 + if(inputs == NULL)
  18 + {
  19 + error();
  20 + }
  21 + int num_inputs = num_occurrences(input,',');
  22 + if(num_inputs != 1)
  23 + {
  24 + error();
  25 + }
  26 + int input_length = strlen(inputs[0]);
  27 + int num = bin2dec(inputs[0]);
  28 + num *= -1;
  29 + char *result = dec2bin(num,input_length);
  30 + printf("%s",result);
  31 + free(result);
  32 + free_mem(inputs,num_inputs);
  33 + return 0;
  34 +}
... ...
arith/comparator.c
  View file @bba49d9
... ... @@ -2,6 +2,9 @@
2 2 #include <string.h>
3 3 #include "auxiliar.h"
4 4  
  5 +#define SIGNED 1
  6 +#define UNSIGNED 0
  7 +
5 8 int check_length(char **inputs, uint8_t num_inputs)
6 9 {
7 10 int input_length = strlen(inputs[0]);
... ... @@ -14,9 +17,8 @@ int check_length(char **inputs, uint8_t num_inputs)
14 17  
15 18 int main(int argc, char **argv)
16 19 {
17   - int i;
18   - int pos;
19   - if(argc != 2)
  20 + uint8_t signedness;
  21 + if(argc != 3)
20 22 {
21 23 error();
22 24 }
... ... @@ -25,6 +27,18 @@ int main(int argc, char **argv)
25 27 {
26 28 error();
27 29 }
  30 + if(!strcmp("unsigned", argv[2]))
  31 + {
  32 + signedness = UNSIGNED;
  33 + }
  34 + else if(!strcmp("signed", argv[2]))
  35 + {
  36 + signedness = SIGNED;
  37 + }
  38 + else
  39 + {
  40 + error();
  41 + }
28 42 char **inputs = comma_separate(input);
29 43 if(inputs == NULL)
30 44 {
... ... @@ -37,8 +51,16 @@ int main(int argc, char **argv)
37 51 }
38 52 int input_length = check_length(inputs,num_inputs);
39 53 int a,b;
40   - a = bin2dec(inputs[0]);
41   - b = bin2dec(inputs[1]);
  54 + if(signedness == UNSIGNED)
  55 + {
  56 + a = bin2udec(inputs[0]);
  57 + b = bin2udec(inputs[1]);
  58 + }
  59 + else if(signedness == SIGNED)
  60 + {
  61 + a = bin2dec(inputs[0]);
  62 + b = bin2dec(inputs[1]);
  63 + }
42 64 if(a > b)
43 65 {
44 66 printf("1,0,0");
... ...
arith/divider.c
  View file @bba49d9
... ... @@ -18,8 +18,6 @@ int check_length(char **inputs, uint8_t num_inputs)
18 18  
19 19 int main(int argc, char **argv)
20 20 {
21   - int i;
22   - int pos;
23 21 if(argc != 2)
24 22 {
25 23 error();
... ... @@ -51,8 +49,8 @@ int main(int argc, char **argv)
51 49 memset(op,0x00,input_length+1);
52 50 strcpy(op,upper);
53 51 strcat(op,lower);
54   - a = bin2dec(op);
55   - b = bin2dec(inputs[2]);
  52 + a = bin2udec(op);
  53 + b = bin2udec(inputs[2]);
56 54 c = a/b;
57 55 rem = a%b;
58 56 char *result = dec2bin(c,input_length);
... ...
arith/multiplier.c
  View file @bba49d9
... ... @@ -18,8 +18,6 @@ int check_length(char **inputs, uint8_t num_inputs)
18 18  
19 19 int main(int argc, char **argv)
20 20 {
21   - int i;
22   - int pos;
23 21 if(argc != 2)
24 22 {
25 23 error();
... ... @@ -45,9 +43,9 @@ int main(int argc, char **argv)
45 43 error();
46 44 }
47 45 int a,b,carry_in,c;
48   - a = bin2dec(inputs[0]);
49   - b = bin2dec(inputs[1]);
50   - carry_in = bin2dec(inputs[2]);
  46 + a = bin2udec(inputs[0]);
  47 + b = bin2udec(inputs[1]);
  48 + carry_in = bin2udec(inputs[2]);
51 49 c = (a*b)+carry_in;
52 50 char *result = dec2bin(c,input_length*2);
53 51 printf("%s,%.*s",result+input_length,input_length,result);
... ...
arith/negator.c
  View file @bba49d9
... ... @@ -4,8 +4,6 @@
4 4  
5 5 int main(int argc, char **argv)
6 6 {
7   - int i;
8   - int pos;
9 7 if(argc != 2)
10 8 {
11 9 error();
... ...
arith/shifter.c 0 → 100644
  View file @bba49d9
  1 +#include <stdio.h>
  2 +#include <string.h>
  3 +#include "auxiliar.h"
  4 +
  5 +#define LEFT 0
  6 +#define RIGHT 1
  7 +#define LOGIC 0
  8 +#define ARITH 1
  9 +#define ROTATE 2
  10 +
  11 +int main(int argc, char **argv)
  12 +{
  13 + uint8_t direction, type;
  14 + int shift;
  15 + if(argc != 3)
  16 + {
  17 + error();
  18 + }
  19 + char *input = argv[1];
  20 + if(!strcmp(input,"error"))
  21 + {
  22 + error();
  23 + }
  24 + char **inputs = comma_separate(input);
  25 + if(inputs == NULL)
  26 + {
  27 + error();
  28 + }
  29 + int num_inputs = num_occurrences(input,',');
  30 + if(num_inputs != 2)
  31 + {
  32 + error();
  33 + }
  34 + int input_length = strlen(inputs[0]);
  35 + if(!strcmp("logic-left",argv[2]))
  36 + {
  37 + type = LOGIC;
  38 + direction = LEFT;
  39 + }
  40 + else if(!strcmp("logic-right",argv[2]))
  41 + {
  42 + type = LOGIC;
  43 + direction = RIGHT;
  44 + }
  45 + else if(!strcmp("arith-left",argv[2]))
  46 + {
  47 + type = ARITH;
  48 + direction = LEFT;
  49 + }
  50 + else if(!strcmp("arith-right",argv[2]))
  51 + {
  52 + type = ARITH;
  53 + direction = RIGHT;
  54 + }
  55 + else if(!strcmp("rotate-left",argv[2]))
  56 + {
  57 + type = ROTATE;
  58 + direction = LEFT;
  59 + }
  60 + else if(!strcmp("rotate-right",argv[2]))
  61 + {
  62 + type = ROTATE;
  63 + direction = RIGHT;
  64 + }
  65 + else
  66 + {
  67 + error();
  68 + }
  69 + shift = bin2udec(inputs[1]);
  70 + while(shift >= input_length)
  71 + {
  72 + shift = shift % input_length;
  73 + }
  74 + char *result;
  75 + if(!shift)
  76 + {
  77 + result = inputs[0];
  78 + }
  79 + else
  80 + {
  81 + if(type == LOGIC)
  82 + {
  83 + if(direction == LEFT)
  84 + {
  85 + result = dec2bin(bin2udec(inputs[0]) << shift,input_length);
  86 + }
  87 + else
  88 + {
  89 + result = dec2bin(bin2udec(inputs[0]) >> shift,input_length);
  90 + }
  91 + }
  92 + else if(type == ARITH)
  93 + {
  94 + if(direction == LEFT)
  95 + {
  96 + result = dec2bin(bin2dec(inputs[0]) << shift,input_length);
  97 + }
  98 + else
  99 + {
  100 + result = dec2bin(bin2dec(inputs[0]) >> shift,input_length);
  101 + }
  102 + }
  103 + else if(type == ROTATE)
  104 + {
  105 + if(direction == RIGHT)
  106 + {
  107 + shift = input_length - shift;
  108 + }
  109 + result = (char*) malloc(sizeof(char) * (input_length+1));
  110 + memset(result,0x00,input_length);
  111 + strncpy(result,inputs[0]+shift,input_length-shift);
  112 + strncpy(result + (input_length-shift),inputs[0],shift);
  113 + }
  114 + }
  115 + printf("%s",result);
  116 + free(result);
  117 + free_mem(inputs,num_inputs);
  118 + return 0;
  119 +}
... ...
arith/substractor.c
  View file @bba49d9
... ... @@ -14,8 +14,6 @@ int check_length(char **inputs, uint8_t num_inputs)
14 14  
15 15 int main(int argc, char **argv)
16 16 {
17   - int i;
18   - int pos;
19 17 if(argc != 2)
20 18 {
21 19 error();
... ... @@ -42,9 +40,9 @@ int main(int argc, char **argv)
42 40 }
43 41 int a,b,borrow_in,c;
44 42 char borrow_out = '0';
45   - a = bin2dec(inputs[0]);
46   - b = bin2dec(inputs[1]);
47   - borrow_in = bin2dec(inputs[2]);
  43 + a = bin2udec(inputs[0]);
  44 + b = bin2udec(inputs[1]);
  45 + borrow_in = bin2udec(inputs[2]);
48 46 c = a-(b+borrow_in);
49 47 if(c < 0)
50 48 {
... ...
common/auxiliar.c
  View file @bba49d9
... ... @@ -150,6 +150,27 @@ int bin2dec(char *bin)
150 150 return num;
151 151 }
152 152  
  153 +int bin2udec(char *bin)
  154 +{
  155 + int i;
  156 + int num = 0;
  157 + int length = strlen(bin);
  158 + int pos = length - 1;
  159 + char *aux = (char*) malloc(sizeof(char) * (length+1));
  160 + memset(aux,0x00,length+1);
  161 + strcpy(aux,bin);
  162 + normalize(&aux,1);
  163 + for(i = 0; i < length; i++)
  164 + {
  165 + if(aux[pos--])
  166 + {
  167 + num += 0x1 << i;
  168 + }
  169 + }
  170 + free(aux);
  171 + return num;
  172 +}
  173 +
153 174 char* dec2bin(int dec, int length)
154 175 {
155 176 char *bin = (char*) malloc(sizeof(char) * (length + 1));
... ...
common/auxiliar.h
  View file @bba49d9
... ... @@ -15,6 +15,7 @@ void free_mem(char **inputs, int num_inputs);
15 15  
16 16 void normalize(char **inputs, int num_inputs);
17 17 int bin2dec(char *bin);
  18 +int bin2udec(char *bin);
18 19 char* dec2bin(int dec, int length);
19 20 void expand_input(char **input, int required_length);
20 21 void reverse_two_complement(char *bin);
... ...