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Difference between revisions of "AmiWest Lesson 2"

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== Basic Types ==
  
== Basic Types ==
   
−
It is very important to under at least the basic types when programming. The following table summarizes the basic types used in AmigaOS as compared to standard C and C++ types:
 +
It is important to under at least the basic types when programming. The following table summarizes the basic types used in AmigaOS as compared to standard C and C++ types:
   
 
{| class="wikitable"
  
{| class="wikitable"
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! Type !! Deprecated Type(s) !! C !! C++
  
! Type !! Deprecated Type(s) !! C !! C++
 
|-
  
|-
−
| uint64 || n/a || uint64_t || uint64_t
 +
| uint64 || none || uint64_t || uint64_t
 
|-
  
|-
−
| int64 || n/a || int64_t || int64_t
 +
| int64 || none || int64_t || int64_t
 
|-
  
|-
 
| uint32 || ULONG or LONGBITS or CPTR || uint32_t || uint32_t
  
| uint32 || ULONG or LONGBITS or CPTR || uint32_t || uint32_t
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| int8 || BYTE || signed char || signed char
  
| int8 || BYTE || signed char || signed char
 
|-
  
|-
−
| STRPTR || n/a || char* || char*
 +
| STRPTR || none || char* || char*
 
|-
  
|-
 
| CONST STRPTR || n/a || char* const x || char* const x
  
| CONST STRPTR || n/a || char* const x || char* const x
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| CONST CONST_STRPTR || n/a || const char* const || const char* const
  
| CONST CONST_STRPTR || n/a || const char* const || const char* const
 
|-
  
|-
−
| APTR || n/a || void* || void*
 +
| APTR || none || void* || void*
 
|-
  
|-
−
| CONST APTR || n/a || void* const x || void* const x
 +
| CONST APTR || none || void* const x || void* const x
 
|-
  
|-
−
| CONST_APTR || n/a || const void* || const void*
 +
| CONST_APTR || none || const void* || const void*
 
|-
  
|-
−
| CONST CONST_APTR || n/a || const void* const || const void* const
 +
| CONST CONST_APTR || none || const void* const || const void* const
 
|-
  
|-
 
| float32 || FLOAT || float || float
  
| float32 || FLOAT || float || float
 
|-
  
|-
 
| float64 || DOUBLE || double || double
  
| float64 || DOUBLE || double || double
  +
|-
  +
| BOOL || none || int16 || int16
  +
|-
  +
| TEXT || none || char || char
  +
|-
  +
| NULL || none || 0L || (void*)0L
  +
|-
  +
| BPTR || none || int32_t || int32_t
  +
|-
  +
| BSTR || none || int32_t || int32_t
  +
|-
  +
| ZERO || none || (BPTR)0 || (BPTR)0
 
|}
  
|}

Revision as of 05:48, 9 October 2012

AmiWest Lesson 1: Fundamentals

Basic Types

It is important to under at least the basic types when programming. The following table summarizes the basic types used in AmigaOS as compared to standard C and C++ types:

AmigaOS Types
Type Deprecated Type(s) C C++
uint64 none uint64_t uint64_t
int64 none int64_t int64_t
uint32 ULONG or LONGBITS or CPTR uint32_t uint32_t
int32 LONG int32_t int32_t
uint16 UWORD or WORDBITS or USHORT or UCOUNT or RPTR uint16_t uint16_t
int16 WORD or SHORT or COUNT int16_t int16_t
uint8 UBYTE or BYTEBITS char or unsigned char unsigned char
int8 BYTE signed char signed char
STRPTR none char* char*
CONST STRPTR n/a char* const x char* const x
CONST_STRPTR n/a const char* const char*
CONST CONST_STRPTR n/a const char* const const char* const
APTR none void* void*
CONST APTR none void* const x void* const x
CONST_APTR none const void* const void*
CONST CONST_APTR none const void* const const void* const
float32 FLOAT float float
float64 DOUBLE double double
BOOL none int16 int16
TEXT none char char
NULL none 0L (void*)0L
BPTR none int32_t int32_t
BSTR none int32_t int32_t
ZERO none (BPTR)0 (BPTR)0
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