haikuprojects/befpc
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fixed tabs, added QWord.

Browse Source
This commit is contained in:
oscarl-2
2003-11-17 21:03:27 +00:00
parent 6a12e04be7
commit b003d3f4e2
1 changed files with 46 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

84
bepascal/docs/NumericalTypes.txt
View File

@@ -3,56 +3,64 @@ The following table shows correspondences between C/C++ and Pascal numerical typ
References are: References are:
- FPC Reference guide (v1.0.8). - FPC Reference guide (v1.0.8).
- The C Library Reference Guide, by Eric Huss. - The C Library Reference Guide, by Eric Huss.
- BeAPI headers.
C/C++ <-> BeAPI <-> Pascal C/C++ <-> BeAPI <-> Pascal
========================== ==========================
unsigned char = unit8 = Byte; signed char = int8 = Shortint;
char = int8 = Shortint; unsigned char = unit8 = Byte;
unsigned int = unit16 = Word;
short int = int16 = Smallint; short int = int16 = Smallint;
int = = We use Integer most times for this, but could be Smallint unsigned int = unit16 = Word;
unsigned long = uint32 = Longword;
long = int32 = Longint; int = = We use Integer most times for this, but could be Smallint
float = = Single; long = int32 = Longint;
double = = Double; unsigned long = uint32 = Longword;
long double = = Extended; long long = int64 = Int64;
unsigned long long = uint64 = QWord;
float = = Single;
double = = Double;
long double = = Extended;
C/C++ Types C/C++ Types
=========== ===========
Type Size Range Type | Size | Range
--------------------------------- ---------------------------------
unsigned char 8 bits 0 to 255 unsigned char | 8 bits | 0 to 255
char 8 bits -128 to 127 char | 8 bits | -128 to 127
unsigned int 16 bits 0 to 65,535 unsigned int | 16 bits | 0 to 65,535
short int 16 bits -32,768 to 32,767 short int | 16 bits | -32,768 to 32,767
int 16 bits -32,768 to 32,767 int | 16 bits | -32,768 to 32,767
unsigned long 32 bits 0 to 4,294,967,295 unsigned long | 32 bits | 0 to 4,294,967,295
long 32 bits -2,147,483,648 to 2,147,483,647 long | 32 bits | -2,147,483,648 to 2,147,483,647
float 32 bits 1.17549435 * (10^-38) to 3.40282347 * (10^+38) float | 32 bits | 1.17549435 * (10^-38) to 3.40282347 * (10^+38)
double 64 bits 2.2250738585072014 * (10^-308) to 1.7976931348623157 * (10^+308) double | 64 bits | 2.2250738585072014 * (10^-308) to 1.7976931348623157 * (10^+308)
long double 80 bits 3.4 * (10^-4932) to 1.1 * (10^4932) long double | 80 bits | 3.4 * (10^-4932) to 1.1 * (10^4932)
FPC Pascal Types FPC Pascal Types
================ ================
Type Size Range Type | Size | Range
----------------------------- ---------------------------
Byte 8 bits 0..255 Byte | 8 bits | 0..255
ShortInt 8 bits -128..127 ShortInt | 8 bits | -128..127
Word 16 bits 0..65535 Word | 16 bits | 0..65535
SmallInt 16 bits -32768..32767 SmallInt | 16 bits | -32768..32767
LongWord 32 bits 0..4294967295 LongWord | 32 bits | 0..4294967295
LongInt 32 bits -2147483648..2147483647 LongInt | 32 bits | -2147483648..2147483647
Integer 16/32/64 either smallint, longint or int64 | These two depends on the //[*]These two depends on the compiler mode and platform.
Cardinal 16/32/64 either word, longword or qword | compiler mode and platform. Integer | 16 32 64 | either smallint, longint or int64
Cardinal | 16 32 64 | either word, longword or qword
Real 16/32 (depends on the platform) Real | 16/32 | (depends on the platform)
Single 32 bits 1.5E-45 .. 3.4E38 Single | 32 bits | 1.5E-45 .. 3.4E38
Double 64 bits 5.0E-324 .. 1.7E308 Double | 64 bits | 5.0E-324 .. 1.7E308
Extended 80 bits 1.9E-4951 .. 1.1E4932 Extended | 80 bits | 1.9E-4951 .. 1.1E4932
Int64 64 -9223372036854775808 .. 9223372036854775807 Int64 | 64 bits | -9223372036854775808 .. 9223372036854775807
QWord 64 0 .. 18446744073709551615 QWord | 64 bits | 0 .. 18446744073709551615
Comp 64 -2E64+1 .. 2E63-1 Comp | 64 bits | -2E64+1 .. 2E63-1