Drizzled Public API Documentation

m_string.h
1 /* Copyright (C) 2000 MySQL AB
2 
3  This program is free software; you can redistribute it and/or modify
4  it under the terms of the GNU General Public License as published by
5  the Free Software Foundation; version 2 of the License.
6 
7  This program is distributed in the hope that it will be useful,
8  but WITHOUT ANY WARRANTY; without even the implied warranty of
9  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  GNU General Public License for more details.
11 
12  You should have received a copy of the GNU General Public License
13  along with this program; if not, write to the Free Software
14  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
15 
16 /* There may be prolems include all of theese. Try to test in
17  configure with ones are needed? */
18 
19 #pragma once
20 
21 #include <strings.h>
22 #include <cstring>
23 #include <cstdlib>
24 #include <cstddef>
25 #include <cassert>
26 #include <climits>
27 #include <cctype>
28 
29 #include <drizzled/visibility.h>
30 
31 namespace drizzled {
32 namespace internal {
33 
34 extern void bmove_upp(unsigned char *dst,const unsigned char *src,size_t len);
35 
36 /* Conversion routines */
37 enum my_gcvt_arg_type
38 {
39  MY_GCVT_ARG_FLOAT,
40  MY_GCVT_ARG_DOUBLE
41 };
42 
43 DRIZZLED_API double my_strtod(const char *str, char **end, int *error);
44 DRIZZLED_API double my_atof(const char *nptr);
45 DRIZZLED_API size_t my_fcvt(double x, int precision, char *to, bool *error);
46 DRIZZLED_API size_t my_gcvt(double x, my_gcvt_arg_type type, int width, char *to, bool *error);
47 
48 #define NOT_FIXED_DEC (uint8_t)31
49 
50 /*
51  The longest string my_fcvt can return is 311 + "precision" bytes.
52  Here we assume that we never cal my_fcvt() with precision >= NOT_FIXED_DEC
53  (+ 1 byte for the terminating '\0').
54 */
55 #define FLOATING_POINT_BUFFER (311 + NOT_FIXED_DEC)
56 
57 /*
58  We want to use the 'e' format in some cases even if we have enough space
59  for the 'f' one just to mimic sprintf("%.15g") behavior for large integers,
60  and to improve it for numbers < 10^(-4).
61  That is, for |x| < 1 we require |x| >= 10^(-15), and for |x| > 1 we require
62  it to be integer and be <= 10^DBL_DIG for the 'f' format to be used.
63  We don't lose precision, but make cases like "1e200" or "0.00001" look nicer.
64 */
65 #define MAX_DECPT_FOR_F_FORMAT DBL_DIG
66 
67 extern char *llstr(int64_t value,char *buff);
68 extern char *ullstr(int64_t value,char *buff);
69 
70 extern char *int2str(int32_t val, char *dst, int radix, int upcase);
71 extern char *int10_to_str(int32_t val,char *dst,int radix);
72 DRIZZLED_API int64_t my_strtoll10(const char *nptr, char **endptr, int *error);
73 DRIZZLED_API char *int64_t2str(int64_t val,char *dst,int radix);
74 DRIZZLED_API char *int64_t10_to_str(int64_t val,char *dst,int radix);
75 
76 
85 static inline const unsigned char *
86 skip_trailing_space(const unsigned char *ptr, size_t len)
87 {
88  const unsigned char *end= ptr + len;
89 
90  while (end > ptr && isspace(*--end))
91  continue;
92  return end+1;
93 }
94 
95 } /* namespace internal */
96 } /* namespace drizzled */
97 
TODO: Rename this file - func.h is stupid.
#define DRIZZLED_API
Definition: visibility.h:62
Visibility Control Macros.