/ray/src/lib/lex/fastval2str.h File Reference

Fast integer / floating point tring writing routines. More...

#include <lib/sconfig.h>
#include <lib/serror.h>

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Defines
#define	_LIB_LEX_FASTVAL2STRING_H_   1

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Detailed Description

Fast integer / floating point tring writing routines.

Author:

Wolfgang Wieser ] wwieser (a) gmx <*> de [

Functions to convert integer and floating point values into strings. These are just basic routines indended to be fast.

Definition in file fastval2str.h.

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Define Documentation

#define _LIB_LEX_FASTVAL2STRING_H_   1

Definition at line 18 of file fastval2str.h.

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Function Documentation

char* FastFloat2String (  char *  dest, dbl  val )

Definition at line 192 of file fastval2str.cc. References dbl. Referenced by VM::InstructionStorage::DumpInstruction().

char* FastFloat2String (  char *  dest, flt  val )

Author: Wolfgang Wieser ] wwieser (a) gmx <*> de [ The floating point value will be emitted as a hexadecimal floating point value representing the complete prescision of a 4 or 8 byte floating point value, respectively. Trailing zeros are omitted. NOTE that this is a dangerous function (dangerous for the sake of speed). The caller has to make sure that dest is long enough to hold the string. Fortunately, the limit is not very hard to predict: it is 4+13+2+3 = 22 chars for a flt. 4+6+2+2 = 14 chars for a dbl. The result looks like "-0x.11111p-22". Definition at line 190 of file fastval2str.cc. References flt.

char* FastInt2String (  char *  dest, uint64  val, char  base = 16 )

Definition at line 119 of file fastval2str.cc. References uint64. Referenced by VM::NamespaceInfo::SymbolEntryB::CompleteName(), VM::ClassInfoIE::CompleteName(), and VM::InstructionStorage::DumpInstruction().

char* FastInt2String (  char *  dest, uint32  val, char  base = 16 )

Definition at line 117 of file fastval2str.cc. References uint32.

char* FastInt2String (  char *  dest, uint16  val, char  base = 16 )

Definition at line 115 of file fastval2str.cc. References uint16.

char* FastInt2String (  char *  dest, uint8  val, char  base = 16 )

Definition at line 113 of file fastval2str.cc. References uint8.

char* FastInt2String (  char *  dest, int64  val, char  base = 16 )

Definition at line 143 of file fastval2str.cc. References int64.

char* FastInt2String (  char *  dest, int32  val, char  base = 16 )

Definition at line 141 of file fastval2str.cc. References int32.

char* FastInt2String (  char *  dest, int16  val, char  base = 16 )

Definition at line 139 of file fastval2str.cc. References int16.

char* FastInt2String (  char *  dest, int8  val, char  base = 16 )

Author: Wolfgang Wieser ] wwieser (a) gmx <*> de [ These functions will convert the intever val to a string written into *dest. The string will NOT be NUL-terminated and the returned pointer points to the location where to go on (e.g. by terminating with NUL). The integer can be written in a base of 8, 10 or 16. For base 8, a zero (0) is prepended, for base 16, 0x is prepended. NOTE that this is a dangerous function (dangerous for the sake of speed). The caller has to make sure that dest is long enough to hold the string. Fortunately, the limit is not very hard to predict; here is a table: Integer octal decimal hex Integer octal decimal hex uint8 4 3 4 int8 5 4 5 uint16 7 5 6 int16 8 6 7 uint32 12 10 10 int32 13 11 11 uint64 23 20 18 int64 24 20 19 Generally, the space consumption is ceil(sizeof(T)*8/log2(base)) for the digits +1 for a sign +1 for octal and +2 for hexadecimal prefix THESE FUNCTIONS ARE FAST BUT DANGEROUS. USE WITH CARE. IF IN DOUBT, USE SOMETHING ELSE. THEY ARE PRIMARILY FOR INTERNAL USE BY HIGHER-LEVEL OUTPUT ROUTINES. Definition at line 137 of file fastval2str.cc. References int8.

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