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  1. // I/O of integers.
  2. #ifndef _CL_INTEGER_IO_H
  3. #define _CL_INTEGER_IO_H
  4. #include "cln/number_io.h"
  5. #include "cln/integer_class.h"
  6. namespace cln {
  7. // Undocumented input functions
  8. // Wandelt eine Zeichenkette mit Integer-Syntax in ein Integer um.
  9. // Punkte werden überlesen.
  10. // read_integer(base,sign,string,index1,index2)
  11. // > base: Lesebasis (>=2, <=36)
  12. // > sign: Vorzeichen (/=0 falls negativ)
  13. // > string: Simple-String (enthält Ziffern mit Wert <base und evtl. Punkt)
  14. // > index1: Index der ersten Ziffer
  15. // > index2: Index nach der letzten Ziffer
  16. // (also index2-index1 Ziffern, incl. evtl. Dezimalpunkt am Schluß)
  17. // < ergebnis: Integer
  18. extern const cl_I read_integer (unsigned int base,
  19. cl_signean sign, const char * string, uintC index1, uintC index2);
  20. // The following does strictly the same as the general read_complex.
  21. // It is here only so that you don't need the rational, complex and float number
  22. // readers in order to read an integer. ("Treeshaking")
  23. extern const cl_I read_integer (const cl_read_flags& flags, const char * string, const char * string_limit, const char * * end_of_parse);
  24. extern const cl_I read_integer (std::istream& stream, const cl_read_flags& flags);
  25. // Documented input functions
  26. inline std::istream& operator>> (std::istream& stream, cl_I& result)
  27. {
  28. extern cl_read_flags cl_I_read_flags;
  29. result = read_integer(stream,cl_I_read_flags);
  30. return stream;
  31. }
  32. // Undocumented output functions
  33. // Liefert zu einem Integer >=0 (write-to-string integer :base 10 :radix nil),
  34. // also die Ziffernfolge als String.
  35. // Mit malloc_hook() alloziert, mit free_hook() freizugeben.
  36. extern char * cl_decimal_string (const cl_I& x);
  37. // Gibt ein Integer aus.
  38. // print_integer(stream,base,z);
  39. // > z: Integer
  40. // > base: Basis (>=2, <=36)
  41. // > stream: Stream
  42. extern void print_integer (std::ostream& stream, unsigned int base, const cl_I& z);
  43. // Dasselbe als String. Mit malloc_hook() alloziert, mit free_hook() freizugeben.
  44. extern char * print_integer_to_string (unsigned int base, const cl_I& z);
  45. // Documented output functions
  46. inline void fprintdecimal (std::ostream& stream, const cl_I& x)
  47. {
  48. print_integer(stream,10,x);
  49. }
  50. inline void fprintbinary (std::ostream& stream, const cl_I& x)
  51. {
  52. print_integer(stream,2,x);
  53. }
  54. inline void fprintoctal (std::ostream& stream, const cl_I& x)
  55. {
  56. print_integer(stream,8,x);
  57. }
  58. inline void fprinthexadecimal (std::ostream& stream, const cl_I& x)
  59. {
  60. print_integer(stream,16,x);
  61. }
  62. // Gibt eine Zahl aus.
  63. // print_integer(stream,flags,z);
  64. // > z: Zahl
  65. // > stream: Stream
  66. // > flags: Ausgabe-Parameter
  67. extern void print_integer (std::ostream& stream, const cl_print_flags& flags, const cl_I& z);
  68. extern void print_integer (std::ostream& stream, const cl_print_number_flags& flags, const cl_I& z);
  69. extern void print_integer (std::ostream& stream, const cl_print_real_flags& flags, const cl_I& z);
  70. extern void print_integer (std::ostream& stream, const cl_print_rational_flags& flags, const cl_I& z);
  71. // The following does strictly the same as the general `fprint' for numbers.
  72. // It is here only so that you don't need the rational number printer
  73. // in order to print an integer. ("Treeshaking")
  74. inline void fprint (std::ostream& stream, const cl_I& x)
  75. {
  76. extern cl_print_flags default_print_flags;
  77. print_integer(stream,default_print_flags,x);
  78. }
  79. CL_DEFINE_PRINT_OPERATOR(cl_I)
  80. } // namespace cln
  81. #endif /* _CL_INTEGER_IO_H */