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Title IEEE 754 representation of any floating point number
Author Dinesh Reddy Jeeru
Author Email dinesh_192000 [at] yahoo.com
Description
Category C » Mathematics
Hits 4430
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#include<stdio.h> int power(int,int); void main() { float a,f,r,x,temp,sum,g; int n,i,j,u,o,b[30],c[30],B[30],Z[30],e[10],m[25],F[40],t,k,y,z,count,exp,h,d; clrscr(); printf("enter the number "); scanf("%f",&a); g=a; if(a<0) { a=0-a; n=a; } else n=a; f=a-n; /* conversion of integer part to binary */ i=0; while(n!=0) { b[i]=n%2; n=n/2; i++; } /* arranging the bits of the binary equalent of integer part*/ for(j=i-1,k=0;j>=0;j--,k++) c[k]=b[j]; if(k==0) { c[k]=0; k=k+1; } /* conversion of floating part to binary */ sum=0; for(i=1;i<=11;i++) { t=power(2,i); r=t; x=1/r; sum=sum+x; temp=sum; if(temp <= f) { B[i-1]=1; sum=temp; } else { B[i-1]=0; sum=temp-x; } } /* arranging the bits of the binary equalent of floating part*/ for(i=0,z=k;i<=10;i++,z++) c[z]=B[i]; /* Combined representation */ //printf(" the equavalent binary representation of the floating point number is: "); //for(y=0;y<=z-1;y++) // { // printf("%d",c[y]); // if(y==k-1) // printf("."); // } /* IEEE 754 format representation */ count=k-1; printf("The IEEE 754 standard floating point number allignment is "); exp=127+count; i=0; while(exp!=0) { Z[i]=exp%2; exp=exp/2; i++; } if(count==0) { Z[i]=0; i++; } if(g<0) printf(" The sign value is %d",1); else printf(" The sign value is %d",0); /* Arranging the bits in order for exponent*/ for(j=i-1,k=0;j>=0;j--,k++) e[k]=Z[j]; printf(" The value of exponent is : "); for(u=0;u<=k-1;u++) printf("%d",e[u]); /* Arranging the bits in order for Mantissa*/ printf(" The value of mantissa is :"); d=z-1; for(y=1,o=0;o<=22;y++,o++) { if(o<d) m[o]=c[y]; else m[o]=0; printf("%d",m[o]); } printf(" The FINAL REPRESENTATION IS : "); for(h=0;h<=31;h++) { if(h==0) { if(g<0) F[0]=1; else F[0]=0; } if(h<=k && h!=0) F[h]=e[h-1]; else if(h>k && h!=0) F[h]=m[h-9]; printf("%d",F[h]); } getch(); } int power(int w, int d) { int pro,i; pro=1; for(i=1;i<=d;i++) pro=pro*w; return(pro); }

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