mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-06-03 14:18:30 +02:00
30 lines
650 B
ObjectPascal
30 lines
650 B
ObjectPascal
program main;
|
|
{$mode objfpc}
|
|
uses
|
|
ctypes;
|
|
|
|
const
|
|
// CoProcessor registers
|
|
DIV_CR : pcuint16 = pointer($04000280);
|
|
DIV_NUMERATOR64 : pcint64 = pointer($04000290);
|
|
DIV_DENOMINATOR32 : pcint32 = pointer($04000298);
|
|
DIV_RESULT32 : pcint32 = pointer($040002A0);
|
|
DIV_64_32 = 1;
|
|
DIV_BUSY = (1 shl 15);
|
|
|
|
function mydivf32(num: cint32; den: cint32): cint32; inline;
|
|
begin
|
|
DIV_CR^ := DIV_64_32;
|
|
while (DIV_CR^ and DIV_BUSY) <> 0 do;
|
|
DIV_NUMERATOR64^ := cint64(num) shl 12;
|
|
DIV_DENOMINATOR32^ := den;
|
|
while (DIV_CR^ and DIV_BUSY) <> 0 do;
|
|
mydivf32 := DIV_RESULT32^;
|
|
end;
|
|
|
|
var
|
|
a: cint32;
|
|
begin
|
|
a := mydivf32(10, 2);
|
|
end.
|