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+ cot, sec, csc, secant, cosecant (mantis #8142)

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git-svn-id: trunk@6170 -
This commit is contained in:
Jonas Maebe 2007-01-24 19:22:53 +00:00
parent c1b1be9a67
commit 0e1c9c901d
1 changed files with 35 additions and 0 deletions
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35
rtl/objpas/math.pp
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@ -262,8 +262,14 @@ function radtocycle(rad : float) : float;
function tan(x : float) : float; function tan(x : float) : float;
function cotan(x : float) : float; function cotan(x : float) : float;
function cot(x : float) : float; inline;
procedure sincos(theta : float;out sinus,cosinus : float); procedure sincos(theta : float;out sinus,cosinus : float);
function secant(x : float) : float; inline;
function cosecant(x : float) : float; inline;
function sec(x : float) : float; inline;
function csc(x : float) : float; inline;
{ inverse functions } { inverse functions }
function arccos(x : float) : float; function arccos(x : float) : float;
@ -677,6 +683,11 @@ function cotan(x : float) : float;
end; end;
{$endif FPC_MATH_HAS_COTAN} {$endif FPC_MATH_HAS_COTAN}
function cot(x : float) : float; inline;
begin
cot := cotan(x);
end;
{$ifndef FPC_MATH_HAS_SINCOS} {$ifndef FPC_MATH_HAS_SINCOS}
procedure sincos(theta : float;out sinus,cosinus : float); procedure sincos(theta : float;out sinus,cosinus : float);
@ -687,6 +698,30 @@ procedure sincos(theta : float;out sinus,cosinus : float);
{$endif FPC_MATH_HAS_SINCOS} {$endif FPC_MATH_HAS_SINCOS}
function secant(x : float) : float; inline;
begin
secant := 1 / cos(x);
end;
function cosecant(x : float) : float; inline;
begin
cosecant := 1 / sin(x);
end;
function sec(x : float) : float; inline;
begin
sec := secant(x);
end;
function csc(x : float) : float; inline;
begin
csc := cosecant(x);
end;
{ ArcSin and ArcCos from Arjan van Dijk (arjan.vanDijk@User.METAIR.WAU.NL) } { ArcSin and ArcCos from Arjan van Dijk (arjan.vanDijk@User.METAIR.WAU.NL) }