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C and C++ Compiler Implementation Limits
ARM DUI 0067D Copyright © 1999-2001 ARM Limited. All rights reserved. D-5
D.3 Limits for integral numbers
Table D-3 gives the ranges for integral numbers in ARM C and C++. The third column
of the table gives the numerical value of the range endpoint. The fourth column gives
the bit pattern (in hexadecimal) that would be interpreted as this value by the ARM
compilers.
When entering a constant, choose the size and sign with care. Constants are interpreted
differently in decimal and hexadecimal/octal. See the appropriate C or C++ standard, or
any of the recommended C and C++ textbooks for more details (see Further reading on
page ix).
Table D-3 Integer ranges
Constant Meaning Endpoint Hex value
CHAR_MAX
Maximum value of
char
255
0xFF
CHAR_MIN
Minimum value of
char
0
0x00
SCHAR_MAX
Maximum value of
signed char
127
0x7F
SCHAR_MIN
Minimum value of
signed char
–128
0x80
UCHAR_MAX
Maximum value of
unsigned char
255
0xFF
SHRT_MAX
Maximum value of
short
32767
0x7FFF
SHRT_MIN
Minimum value of
short
–32768
0x8000
USHRT_MAX
Maximum value of
unsigned short
65535
0xFFFF
INT_MAX
Maximum value of
int
2147483647
0x7FFFFFFF
INT_MIN
Minimum value of
int
–2147483648
0x80000000
LONG_MAX
Maximum value of
long
2147483647
0x7FFFFFFF
LONG_MIN
Minimum value of
long
–2147483648
0x80000000
ULONG_MAX
Maximum value of
unsigned long
4294967295
0xFFFFFFFF
LONG_LONG_MAX
Maximum value of
long long
9.2E+18
0x7FFFFFFF
FFFFFFFF
LONG_LONG_MIN
Minimum value of
long long
–9.2E+18
0x80000000
00000000
ULONG_LONG_MAX
Maximum value of
unsigned long long
1.8E+19
0xFFFFFFFF
FFFFFFFF
- Developer Suite 1
- ARM Developer Suite 2
- Contents 3
- • Feedback on page xii 7
- About this book 8
- Preface 10
- Feedback 12
- Chapter 1 13
- Introduction 13
- 1.3 Linking compiled objects 17
- 1.4 Related utilities 18
- Chapter 2 19
- C and C++ Compilers 19
- 2.2 File usage 22
- 2.3 Command syntax 27
- Debug table format options 41
- Example 2-1 Double and float 46
- Chapter 3 57
- ARM Compiler Reference 57
- #pragma [no_]feature-name 58
- Example 3-1 Section naming 61
- Example 3-2 Pointer to packed 70
- Example 3-3 Packed structure 70
- 3.2 Language extensions 72
- Example 3-5 External access 75
- Example 3-7 Compiler error 76
- 0 1 2 3 83
- 4 5 7 8 83
- 9 10 11 12 83
- Bit number 85
- 3.4 Predefined macros 87
- Chapter 4 91
- -apcs /norwpi 95
- -apcs /rwpi 95
- The C and C++ Libraries 100
- -verbose 101
- 4.6.5 _get_lc_collate() 122
- Example 4-5 LC_COLLATE_DEF 125
- Example 4-6 LC_MONETARY_DEF 126
- Example 4-7 LC_NUMERIC_DEF 127
- 4.6.8 _get_lc_time() 128
- must return a pointer to a 128
- Example 4-9 LC_CTYPE_DEF 132
- Example 4-12 LC_TIME_DEF 134
- Example 4-13 LC_NUMERIC_DEF 136
- Example 4-14 LC_MONETARY_DEF 136
- Example 4-15 LC_INDEX_END 138
- Example 4-16 lconv structure 138
- __raise() 141
- Example 4-17 Heap_Descriptor 151
- Example 4-18 Heap_DescSize 152
- __user_libspace() 158
- __rt_stack_overflow_return 162
- __user_heap_extend() 163
- FILEHANDLE 168
- _sys_open() 168
- so that 172
- _clock_init() 175
- Mathematical functions 182
- Table 4-19 perror() messages 186
- Error Message 186
- 4.14 C library extensions 189
- Example 4-20 heapstats output 193
- -fpu none 196
- Chapter 5 199
- Floating-point Support 199
- -fpu vfp 200
- -fpu softvfp 200
- 25 22 19 18 206
- FZ RM Masks 206
- R RRR VFPVFP 206
- System ID Masks Sticky 208
- FPA onlyR R R 208
- Flag Operand type 217
- is declared in 221
- 5.4 The math library, mathlib 222
- 5.5 IEEE 754 arithmetic 228
- 63 52 5162 0 229
- Exp Frac 229
- Sample values 230
- Some sample 230
- 0x00800000 234
- 0x00400000 234
- 0x00000001 234
- Appendix A 237
- Via File Syntax 237
- A.1 Overview of via files 238
- A.2 Syntax 239
- Appendix B 241
- B.1 Implementation definition 242
- #include <stdio.h> 247
- Appendix C 249
- C.1 EC++ support 250
- C.2 Integral conversion 251
- Appendix D 257
- D.2 Internal limits 260
- Glossary 265
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