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  1. #include <stdio.h>
  2.  
  3. typedef unsigned int Uint;
  4. #define N 100
  5. #define DP 15
  6. //RADIX == 10^LOG
  7. #define LOG 1
  8. #define RADIX 10
  9. typedef Uint Liczba[N+1];
  10.  
  11. void pisz( Liczba a ){ Uint i;
  12. 	for( i=1; i<=DP && !a[i]; i++ ) printf("%*s", LOG,"");
  13. 	printf("%*u", LOG, a[i]);
  14. 	for( i++; i<=DP; i++ ) printf("%0*u", LOG, a[i]);
  15. 	putchar('.');
  16. 	for(    ; i<=N; i++ ) printf("%0*u", LOG, a[i]); }
  17.  
  18. void plus( Liczba a, Liczba b){                  // a[]:=a[]+b[]
  19. 	for( Uint c=0, i=N; i>0; i-- ){
  20. 		c += a[i]+b[i];
  21. 		a[i] = c % RADIX;
  22. 		c /= RADIX;}}
  23.  
  24. void minus( Liczba a, Liczba b ) {               // a[]:=a[]-b[]
  25. 	for( Uint c=0, i=N; i>0; i-- ){
  26. 		c += b[i];
  27. 		if( a[i]<c ){
  28. 			a[i] = RADIX + a[i] - c; c=1; }
  29. 		else {
  30. 			a[i] -= c; c=0; }}}
  31.  
  32. void razyU( Liczba a, Uint b ) {                 // a[]:=a[] * b
  33. 	for( Uint c=0,i=N; i>0; i-- ){
  34. 		c += a[i]*b;
  35. 		a[i]= c % RADIX;
  36. 		c /= RADIX; }}
  37.  
  38. int podzielU( Liczba a, Uint b ) {              // a[]:=a[] / b
  39. 	Uint z=0;
  40. 	for( Uint c=0, i=1; i<=N; i++ ) {
  41. 		c = c*RADIX+a[i];
  42. 		a[i]= c/b % RADIX; if( a[i] ) z=1;
  43. 		c = c - a[i]*b;}
  44. 	return z;}
  45.  
  46. void wstawU( Liczba a, Uint b ) {                // a[]:= b
  47. 	Uint i;
  48. 	for( i=0; i<=N; i++ ) a[i]=0;
  49. 	i=DP;
  50. 	while( b ) {
  51. 		a[i--] = b%RADIX; b /= RADIX; }}
  52.  
  53. void atg( Liczba a, Uint x ) {                  // a[]:= atan( 1/x )
  54. 	Liczba w; Uint z, n=3;
  55. 	wstawU( w, 1 ); wstawU( a, 0 ); podzielU(w, x);
  56. 	do {
  57. 		x *= x*x; z=podzielU( w, x*n ); n += 2;minus( a, w );
  58. 		x *= x*x; z=podzielU( w, x*n ); n += 2; plus( a, w );
  59. 		pisz(w); puts("");
  60. 	} while( z );}	
  61.  
  62. int main(void) {
  63. 	Liczba a;
  64. 	wstawU(a, 12); 
  65. 	razyU(a, 125); pisz(a); puts("");
  66. 	podzielU(a, 77); pisz(a); puts("");
  67. 	atg(a, 5);pisz(a); puts("");
  68. 	printf("\n%0.14f\n", 12.0*125/77.0);
  69. 	return 0;
  70. }
  71.  
Success #stdin #stdout 0.02s 1720KB
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stdin
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Standard input is empty
stdout
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           1500.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000
             19.4805194805194805194805194805194805194805194805194805194805194805194805194805194805194
               0.000000000546133333333333333333333333333333333333333333333333333333333333333333333333
               0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000
999999999999999.9994666667212800000000000000000000000000000000000000000000000000000000000000000000000

19.48051948051948
https://ideone.com/g6kzk
language:
C99 (gcc 8.3)
created:
14 years ago
visibility:
public

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