/cln-1.3.2/src/rational/input/cl_RA_readparsed.cc
C++ | 32 lines | 20 code | 8 blank | 4 comment | 3 complexity | d6b7ed645c6c55dfb653ce25500a7648 MD5 | raw file
Possible License(s): GPL-2.0
- // read_rational().
- // General includes.
- #include "base/cl_sysdep.h"
- // Specification.
- #include "cln/rational_io.h"
- // Implementation.
- #include "rational/cl_RA.h"
- #include "integer/cl_I.h"
- #include "base/cl_N.h"
- namespace cln {
- const cl_RA read_rational (unsigned int base, cl_signean sign, const char * string, uintC index1, uintC index3, uintC index2)
- {
- var uintC index3_1 = index3+1; // Index der ersten Nennerziffer
- var cl_I den = // Nenner
- digits_to_I(&string[index3_1],index2-index3_1,(uintD)base);
- if (zerop(den)) // Division durch 0 abfangen
- { throw division_by_0_exception(); }
- var cl_I num = // Z?hler
- digits_to_I(&string[index1],index3-index1,(uintD)base);
- if (!(sign == 0))
- num = -num; // incl. Vorzeichen
- return I_posI_div_RA(num,den);
- }
- } // namespace cln