setting up git on old project

1 files changed, 60 insertions, 0 deletions

diff --git a/input.c b/input.c
new file mode 100644
index 0000000..bf4dfbd
--- /dev/null
+++ b/input.c
@@ -0,0 +1,60 @@
+#ifndef DET_INPUT_C
+#define DET_INPUT_C DET_INPUT_C
+//how many digits is a number from -n is allowed to have
+#define MAX_DIGITS 100
+#include<stdlib.h>
+#include<stdio.h>
+#include"gmp.h"
+#include<time.h>
+
+
+
+void input_det(FILE* input,mpq_t ***det,size_t *size)
+{
+
+
+	fscanf(input,"%zu",size);
+	(*det)=malloc(sizeof(mpq_t*)*(*size) + sizeof(mpq_t)*(*size)*(*size));
+	size_t i,j;
+
+	for(i=0;i<(*size);++i)
+	{
+		(*det)[i]=((mpq_t*)(((u_int8_t*)(*det)) + sizeof(mpq_t*)*(*size) + sizeof(mpq_t)*(*size)*i));
+		for(j=0;j<(*size);++j)
+		{
+			
+			mpq_init((*det)[i][j]);
+			gmp_fscanf(input,"%Qi",(*det)[i][j]);
+		}
+	}
+}
+/*
+ * places a randomised matrix in det
+ * whose digits are 1 to MAX_DIGITS long
+ *
+ */
+void random_table(mpq_t ***det,size_t size)
+{
+	(*det)=malloc(sizeof(mpq_t*)*size + sizeof(mpq_t)*size*size);
+	size_t i,j;
+	size_t sz;
+	char *number;//we don't want a stack overflow so it goes on the heap
+	number = malloc(sizeof(char)*MAX_DIGITS+1);
+	srand(time(NULL));
+
+	for(i=0;i<size;++i)
+	{
+		(*det)[i]=((mpq_t*)(((u_int8_t*)(*det)) + sizeof(mpq_t*)*size + sizeof(mpq_t)*size*i));
+		for(j=0;j<size;++j)
+		{
+			
+			
+			for(sz=rand()%MAX_DIGITS,number[sz+1]='\0';sz>0;number[sz]=rand()%10+'0',--sz);
+			number[0]=rand()%9 + '1';
+
+			mpq_init((*det)[i][j]);
+			gmp_sscanf(number,"%Qi",(*det)[i][j]);
+		}
+	}
+}
+#endif//#ifndef DET_INPUT_C