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81 lines
2.8 KiB
81 lines
2.8 KiB
// I/O of floats.
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#ifndef _CL_FLOAT_IO_H
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#define _CL_FLOAT_IO_H
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#include "cln/number_io.h"
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#include "cln/float.h"
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namespace cln {
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// Undocumented input functions
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// Wandelt eine Zeichenkette mit Float-Syntax in ein Float um.
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// read_float(base,sign,string,index1,index4,index2,index3)
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// > base: Lesebasis (=10)
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// > sign: Vorzeichen (/=0 falls negativ)
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// > string: Simple-String (enthält Ziffern und evtl. Punkt und Exponentmarker)
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// > index1: Index vom Mantissenanfang (excl. Vorzeichen)
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// > index4: Index nach dem Mantissenende
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// > index2: Index beim Ende der Characters
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// > index3: Index nach dem Dezimalpunkt (=index4 falls keiner da)
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// (also Mantisse mit index4-index1 Characters: Ziffern und max. 1 '.')
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// (also index4-index3 Nachkommaziffern)
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// (also bei index4<index2: index4 = Index des Exponent-Markers,
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// index4+1 = Index des Exponenten-Vorzeichens oder der ersten
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// Exponenten-Ziffer)
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// < ergebnis: Float
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extern const cl_F read_float (unsigned int base, float_format_t prec,
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cl_signean sign, const char * string, uintL index1, uintL index4, uintL index2, uintL index3);
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// The following does strictly the same as the general read_complex.
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// It is here only so that you don't need the complex and rational number
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// readers in order to read a float number. ("Treeshaking")
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extern const cl_F read_float (const cl_read_flags& flags, const char * string, const char * string_limit, const char * * end_of_parse);
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extern const cl_F read_float (cl_istream stream, const cl_read_flags& flags);
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// Documented input functions
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inline cl_istream operator>> (cl_istream stream, cl_F& result)
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{
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extern cl_read_flags cl_F_read_flags;
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result = read_float(stream,cl_F_read_flags);
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return stream;
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}
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// Undocumented output functions
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// Documented output functions
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// Gibt ein Float aus.
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// print_float(stream,z);
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// > z: Float
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// > stream: Stream
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extern void print_float (cl_ostream stream, const cl_print_flags& flags, const cl_F& z);
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extern void print_float (cl_ostream stream, const cl_print_number_flags& flags, const cl_F& z);
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extern void print_float (cl_ostream stream, const cl_print_real_flags& flags, const cl_F& z);
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extern void print_float (cl_ostream stream, const cl_print_float_flags& flags, const cl_F& z);
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// Gibt ein Float binär (sehr primitiv) aus.
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// print_float_binary(stream,z);
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// > z: Float
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// > stream: Stream
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extern void print_float_binary (cl_ostream stream, const cl_F& z);
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// The following does strictly the same as the general `fprint' for numbers.
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// It is here only so that you don't need the complex printer
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// in order to print a float. ("Treeshaking")
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inline void fprint (cl_ostream stream, const cl_F& x)
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{
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extern cl_print_flags default_print_flags;
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print_float(stream,default_print_flags,x);
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}
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CL_DEFINE_PRINT_OPERATOR(cl_F)
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} // namespace cln
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#endif /* _CL_FLOAT_IO_H */
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