System.SineCosine

Delphi

procedure SineCosine(const X: Extended; var Sin, Cos: Extended);

C++

extern DELPHI_PACKAGE void __fastcall SineCosine(const Extended X, Extended &Sin, Extended &Cos);

Type	Visibility	Source	Unit	Parent
procedure function	public	System.pas System.hpp	System	System

Description

Returns sin(X) and cos(X).

System.SineCosine returns both the sine and cosine of X.

X must represent radians.

On x86, this function is based on the FSINCOS instruction.

var
  X, S, C: Extended;

begin
  X := Pi / 4.0;
  SineCosine(X, S, C);
  Writeln(S);
  Writeln(C);

  // ...