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{
Implementation of mathematical routines for x86_64
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2005 by the Free Pascal development team
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
label
FPC_ABSMASK_DOUBLE,
FPC_ABSMASK_SINGLE;
procedure dummyproc;assembler;nostackframe;
asm
.data
.balign 16
.globl FPC_ABSMASK_SINGLE
FPC_ABSMASK_SINGLE:
.quad 0x7FFFFFFF7FFFFFFF
.quad 0x7FFFFFFF7FFFFFFF
.globl FPC_ABSMASK_DOUBLE
FPC_ABSMASK_DOUBLE:
.quad 0x7FFFFFFFFFFFFFFF
.quad 0x7FFFFFFFFFFFFFFF
.text
end;
{****************************************************************************
FPU Control word
****************************************************************************}
procedure Set8087CW(cw:word);
begin
default8087cw:=cw;
asm
fnclex
fldcw cw
end;
end;
function Get8087CW:word;assembler;
var
tmp: word;
asm
fnstcw tmp
movw tmp,%ax
andl $0xffff,%eax { clears bits 32-63 }
end;
procedure SetSSECSR(w : dword);
begin
mxcsr:=w;
asm
ldmxcsr w
end;
end;
function GetSSECSR : dword;assembler;
var
_w : dword;
asm
stmxcsr _w
movl _w,%eax
end;
{****************************************************************************
EXTENDED data type routines
****************************************************************************}
{$ifndef FPC_SYSTEM_HAS_PI}
{$define FPC_SYSTEM_HAS_PI}
function fpc_pi_real : ValReal;compilerproc;
begin
{ Function is handled internal in the compiler }
runerror(207);
result:=0;
end;
{$endif FPC_SYSTEM_HAS_PI}
{$ifndef FPC_SYSTEM_HAS_ABS}
{$define FPC_SYSTEM_HAS_ABS}
function fpc_abs_real(d : ValReal) : ValReal;compilerproc;
begin
{ Function is handled internal in the compiler }
runerror(207);
result:=0;
end;
{$endif FPC_SYSTEM_HAS_ABS}
{$ifndef FPC_SYSTEM_HAS_SQR}
{$define FPC_SYSTEM_HAS_SQR}
function fpc_sqr_real(d : ValReal) : ValReal;compilerproc;
begin
{ Function is handled internal in the compiler }
runerror(207);
result:=0;
end;
{$endif FPC_SYSTEM_HAS_SQR}
{$ifndef FPC_SYSTEM_HAS_SQRT}
{$define FPC_SYSTEM_HAS_SQRT}
function fpc_sqrt_real(d : ValReal) : ValReal;compilerproc;
begin
{ Function is handled internal in the compiler }
runerror(207);
result:=0;
end;
{$endif FPC_SYSTEM_HAS_SQRT}
{$ifndef FPC_SYSTEM_HAS_ARCTAN}
{$define FPC_SYSTEM_HAS_ARCTAN}
function fpc_arctan_real(d : ValReal) : ValReal;compilerproc;
begin
{ Function is handled internal in the compiler }
runerror(207);
result:=0;
end;
{$endif FPC_SYSTEM_HAS_ARCTAN}
{$ifndef FPC_SYSTEM_HAS_LN}
{$define FPC_SYSTEM_HAS_LN}
function fpc_ln_real(d : ValReal) : ValReal;compilerproc;
begin
{ Function is handled internal in the compiler }
runerror(207);
result:=0;
end;
{$endif FPC_SYSTEM_HAS_LN}
{$ifndef FPC_SYSTEM_HAS_SIN}
{$define FPC_SYSTEM_HAS_SIN}
function fpc_sin_real(d : ValReal) : ValReal;compilerproc;
begin
{ Function is handled internal in the compiler }
runerror(207);
result:=0;
end;
{$endif FPC_SYSTEM_HAS_SIN}
{$ifndef FPC_SYSTEM_HAS_COS}
{$define FPC_SYSTEM_HAS_COS}
function fpc_cos_real(d : ValReal) : ValReal;compilerproc;
begin
{ Function is handled internal in the compiler }
runerror(207);
result:=0;
end;
{$endif FPC_SYSTEM_HAS_COS}
{$ifdef FPC_HAS_TYPE_EXTENDED}
{$ifndef FPC_SYSTEM_HAS_EXP}
{$define FPC_SYSTEM_HAS_EXP}
function fpc_exp_real(d : ValReal) : ValReal;assembler;compilerproc;
var
oldcw,newcw: word;
asm
// comes from DJ GPP
fldt d
fldl2e
fmulp %st,%st(1)
fstcw oldcw
fstcw newcw
andw $0xf3ff,newcw
orw $0x0400,newcw
fldcw newcw
fld %st(0)
frndint
fldcw oldcw
fxch %st(1)
fsub %st(1),%st
f2xm1
fld1
faddp %st,%st(1)
fscale
fstp %st(1)
end;
{$endif FPC_SYSTEM_HAS_EXP}
{$ifndef FPC_SYSTEM_HAS_FRAC}
{$define FPC_SYSTEM_HAS_FRAC}
function fpc_frac_real(d : ValReal) : ValReal;assembler;compilerproc;
var
oldcw,newcw: word;
asm
fnstcw oldcw
fwait
movw oldcw,%cx
orw $0x0c3f,%cx
movw %cx,newcw
fldcw newcw
fwait
fldt d
frndint
fldt d
fsub %st(1),%st
fstp %st(1)
fnclex
fldcw oldcw
end;
{$endif FPC_SYSTEM_HAS_FRAC}
{$ifndef FPC_SYSTEM_HAS_INT}
{$define FPC_SYSTEM_HAS_INT}
function fpc_int_real(d : ValReal) : ValReal;assembler;compilerproc;
var
oldcw,newcw: word;
asm
fnstcw oldcw
fwait
movw oldcw,%cx
orw $0x0c3f,%cx
movw %cx,newcw
fldcw newcw
fwait
fldt d
frndint
fwait
fldcw oldcw
end;
{$endif FPC_SYSTEM_HAS_INT}
{$ifndef FPC_SYSTEM_HAS_TRUNC}
{$define FPC_SYSTEM_HAS_TRUNC}
function fpc_trunc_real(d : ValReal) : int64;assembler;compilerproc;
var
oldcw,
newcw : word;
res : int64;
asm
fnstcw oldcw
fwait
movw oldcw,%cx
orw $0x0c3f,%cx
movw %cx,newcw
fldcw newcw
fldt d
fistpq res
fwait
movq res,%rax
fldcw oldcw
end;
{$endif FPC_SYSTEM_HAS_TRUNC}
{$ifndef FPC_SYSTEM_HAS_ROUND}
{$define FPC_SYSTEM_HAS_ROUND}
function fpc_round_real(d : ValReal) : int64;assembler;compilerproc;
var
res : int64;
asm
fldt d
fistpq res
fwait
movq res,%rax
end;
{$endif FPC_SYSTEM_HAS_ROUND}
{$ifndef FPC_SYSTEM_HAS_POWER}
{$define FPC_SYSTEM_HAS_POWER}
function power(bas,expo : extended) : extended;
begin
if bas=0 then
begin
if expo<>0 then
power:=0.0
else
HandleError(207);
end
else if expo=0 then
power:=1
else
{ bas < 0 is not allowed }
if bas<0 then
handleerror(207)
else
power:=exp(ln(bas)*expo);
end;
{$endif FPC_SYSTEM_HAS_POWER}
{$endif FPC_HAS_TYPE_EXTENDED}
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