main.cpp

00001 #include "mbed.h"
00002 #include <stdio.h>      /* printf, fgets */
00003 #include <stdlib.h>     /* atoi */
00004 
00005 Timer t;
00006 Serial pc(USBTX, USBRX);
00007 
00008 extern "C" int mult_asm(int a, int b);
00009 extern "C" int mult_c(int c, int d);
00010 
00011 int main() {
00012     for (int k=20;k<300;k+=10){
00013        int COUNT=k;
00014     int A [COUNT], B[COUNT],C[COUNT];
00015     
00016     for (int i=0;i<COUNT;i++){
00017         A[i]=(int)rand()/ 1000000;
00018         B[i]=(int)rand()/ 1000000;
00019     }
00020     printf("Assembler: ");
00021     printf("%d \n",k);
00022     t.start();
00023 
00024     for (int i=0;i<COUNT;i++){
00025     C[i]=mult_asm(A[i], B[i]);
00026     }
00027     t.stop();
00028     for (int i=0;i<COUNT;i++){
00029        printf("%d ",C[i]);
00030     }
00031 
00032     printf("\nThe time taken was %f seconds\n", t.read());
00033 
00034     t.reset();
00035     
00036     printf("C        :");
00037     t.start();
00038 
00039     for (int i=0;i<COUNT;i++){
00040     C[i]=mult_c(A[i], B[i]);
00041     }
00042     t.stop();
00043 
00044     for (int i=0;i<COUNT;i++){
00045        printf("%d ",C[i]);
00046     }
00047     printf("\nThe time taken was %f seconds\n\n", t.read());
00048      }
00049 }