aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions
RosettaCodeData/Task/Trigonometric-functions/OoRexx/trigonometric-functions-2.rexx
Ingy döt Net f23f22d71c Initial data commit
2023-07-01 13:44:08 -04:00

1032 lines
28 KiB
Rexx
Raw Permalink Blame History

/********************************************************************
* Package rxm
* implements the functions available in RxMath with high precision
* by computing the values with significantly increased precision
* and rounding the result to the specified precision.
* This started 10 years ago when Vladimir Zabrodsky published his
* Album of Algorithms http://zabrodsky-rexx.byethost18.com/aat/
* Gerard Schildberger suggests on rosettacode.org to use +10 digits
* Rony Flatscher suggested and helped to turn this into an ooRexx class
* Rick McGuire advised on using Use STRICT Arg for argument checking
* Alexander Seik creates this documentation
* Horst Wegscheider helped with reviewing and some improvements
* 12.04.2014 Walter Pachl
* Documentation: see rxmath.pdf in the ooRexx distribution
* and rxm.doc (here)
* 13.04.2014 WP arcsin and arctan commentary corrected (courtesy Horst)
* 13.04.2014 WP improve arctan performance
* 20.04.2014 WP towards completion
* 24.04.2014 WP arcsin verbessert. courtesy Horst Wegscheider
* 28.04.2014 WP run ooRexxDoc
* 11.08.2014 WP replace log algorithm with Vladimir Zabrodsky's code
**********************************************************************/
.local~my.rxm=.rxm~new(16,"D")
::Class rxm Public
::Method init
Expose precision type
Use Arg precision=(digits()),type='D'
::attribute precision set
Expose precision
Use Strict Arg precision=(digits())
::attribute precision get
::attribute type set
Expose type
Use Strict Arg type='R'
::attribute type get
::Method arccos
/***********************************************************************
* Return arccos(x,precision,type) -- with specified precision
* arccos(x) = pi/2 - arcsin(x)
***********************************************************************/
Expose precision type
Use Strict Arg x,xprec=(precision),xtype=(type)
iprec=xprec+10
Numeric Digits iprec
If x=1 Then
r=0
Else Do
r=self~arcsin(x,iprec,'R')
If r='nan' Then
Return r
r=self~pi(iprec)/2 - r
End
Select
When xtype='D' Then
r=r*180/self~pi(iprec)
When xtype='G' Then
r=r*200/self~pi(iprec)
Otherwise
Nop
End
Numeric Digits xprec
Return (r+0)
::Method arcsin
/***********************************************************************
* Return arcsin(x,precision,type) -- with specified precision
* arcsin(x) = x+(x**3)*1/2*3+(x**5)*1*3/2*4*5+(x**7)*1*3*5/2*4*6*7+...
***********************************************************************/
Expose precision type
Use Strict Arg x,xprec=(precision),xtype=(type)
iprec=xprec+10
Numeric Digits iprec
sign=sign(x)
If x<0 Then
x=abs(x)
Select
When abs(x)>1 Then
Return 'nan'
When x=0 Then
r=0
When x=1 Then
r=rxmpi(iprec)/2
When x<0.8 Then Do
o=x
u=1
r=x
Do i=3 By 2 Until ra=r
ra=r
o=o*x*x*(i-2)
u=u*(i-1)*i/(i-2)
r=r+(o/u)
If r=ra Then
r=r+(o/u)/2 /* final touch */
End
End
Otherwise Do
z=x
r=x
o=x
s=x*x
do j=2 by 2;
o=o*s*(j-1)/j;
z=z+o/(j+1);
if z=r then
leave
r=z;
end
/***********************
y=(1-x*x)/4
n=0.5-self~sqrt(y,iprec)
z=self~sqrt(n,iprec)
r=2*self~arcsin(z,xprec)
***********************/
End
End
Select
When xtype='D' Then
r=r*180/self~pi(iprec)
When xtype='G' Then
r=r*200/self~pi(iprec)
Otherwise
Nop
End
Numeric Digits xprec
Return sign*(r+0)
::Method arctan
/***********************************************************************
* Return arctan(x,precision,type) -- with specified precision
* x=0 -> arctan(x) = 0
* If x>0 Then
* x<1 -> arctan(x) = arcsin(x/sqrt(x**2+1))
* x=1 -> arctan(x) = pi/4
* x>1 -> arctan(x) = pi/2-arcsin((1/x)/sqrt((1/x)**2+1))
* Else
* adjust as necessary
***********************************************************************/
Expose precision type
Use Strict Arg x,xprec=(precision),xtype=(type)
iprec=xprec+10
Numeric Digits iprec
Select
When abs(x)<1 Then
r=self~arcsin(x/self~sqrt(1+x**2,iprec),iprec,'R')
When abs(x)=1 Then
r=self~pi(iprec)/4*sign(x)
Otherwise Do
xr=1/abs(x)
r=self~arcsin(xr/self~sqrt(1+xr**2,iprec),iprec,'R')
If x>0 Then
r=self~pi(iprec)/2-r
Else
r=-self~pi(iprec)/2+r
End
End
Select
When xtype='D' Then
r=r*180/self~pi(iprec)
When xtype='G' Then
r=r*200/self~pi(iprec)
Otherwise
Nop
End
Numeric Digits xprec
Return (r+0)
::Method arsinh
/***********************************************************************
* Return arsinh(x,precision,type) -- with specified precision
* arsinh(x) = ln(x+sqrt(x**2+1))
***********************************************************************/
Expose precision
Use Strict Arg x,xprec=(precision)
iprec=xprec+10
Numeric Digits iprec
x2p1=x**2+1
r=self~log(x+self~sqrt(x2p1,iprec),iprec)
Numeric Digits xprec
Return (r+0)
::Method cos
/* REXX *************************************************************
* Return cos(x,precision,type) -- with the specified precision
* cos(x)=sin(x+pi/2)
********************************************************************/
Expose precision type
Use Strict Arg x,xprec=(precision),xtype=(type)
iprec=xprec+10
Numeric Digits iprec
Select
When xtype='R' Then xa=x+self~pi(iprec)/2
When xtype='D' Then xa=x+90
When xtype='G' Then xa=x+100
End
r=self~sin(xa,iprec,xtype)
Numeric Digits xprec
Return (r+0)
::Method cosh
/* REXX ****************************************************************
* Return cosh(x,precision,type) -- with specified precision
* cosh(x) = 1+(x**2/2!)+(x**4/4!)+(x**6/6!)+-...
***********************************************************************/
Expose precision
Use Strict Arg x,xprec=(precision)
iprec=xprec+10
Numeric Digits iprec
o=1
u=1
r=1
Do i=2 By 2 Until ra=r
ra=r
o=o*x*x
u=u*i*(i-1)
r=r+(o/u)
End
Numeric Digits xprec
Return (r+0)
::Method cotan
/* REXX *************************************************************
* Return cotan(x,precision,type) -- with the specified precision
* cot(x)=cos(x)/sin(x)
********************************************************************/
Expose precision type
Use Strict Arg x,xprec=(precision),xtype=(type)
iprec=xprec+10
Numeric Digits iprec
s=self~sin(x,iprec,xtype)
c=self~cos(x,iprec,xtype)
If s=0 Then
Return '+infinity'
r=c/s
Numeric Digits xprec
Return (r+0)
::Method exp
/***********************************************************************
* exp(x,precision) returns e**x -- with specified precision
* exp(x,precision,base) returns base**x -- with specified precision
***********************************************************************/
Expose precision
Use Strict Arg x,xprec=(precision),xbase=''
iprec=xprec+10
Numeric Digits iprec
Numeric Fuzz 3
If xbase<>'' Then Do
Select
When xbase=0 Then Do
Select
When x<0 Then Return '+infinity'
When x=0 Then Return 'nan'
Otherwise Return 0
End
End
When xbase=1 Then Return 1
When xbase<0 Then Do
Select
When x=0 Then Return 1
When datatype(x,'W')=0 Then Return 'nan'
Otherwise Do
r=xbase**x
Numeric Digits xprec
Return r+0
End
End
End
Otherwise
x=x*self~log(xbase,iprec)
End
End
o=1
u=1
r=1
Do i=1 By 1 Until ra=r
ra=r
o=o*x
u=u*i
r=r+(o/u)
End
Numeric Digits xprec
Return (r+0)
::Method log
/***********************************************************************
* log(x,precision) -- returns ln(x) with specified precision
* log(x,precision,base) -- returns blog(x) with specified precision
* Three different series are used for ln(x): x in range 0 to 0.5
* 0.5 to 1.5
* 1.5 to infinity
***********************************************************************/
Expose precision
Use Strict Arg x,xprec=(precision),xbase=''
iprec=xprec+100
Numeric Digits iprec
Select
When x=0 Then Return '-infinity'
When x<0 Then Return 'nan'
When x<1 Then r= -self~Log(1/X,xprec)
Otherwise Do
do M = 0 until (2 ** M) > X; end
M = M - 1
Z = X / (2 ** M)
Zeta = (1 - Z) / (1 + Z)
N = Zeta; Ln = Zeta; Zetasup2 = Zeta * Zeta
do J = 1
N = N * Zetasup2; NewLn = Ln + N / (2 * J + 1)
if NewLn = Ln then Do
r= M * self~LN2P(xprec) - 2 * Ln
Leave
End
Ln = NewLn
end
End
End
If x>0 Then Do
If xbase>'' Then
r=r/self~log(xbase,iprec)
Numeric Digits xprec
r=r+0
End
Return r
::Method ln2p
Parse Arg p
Numeric Digits p+10
If p<=1000 Then
Return self~ln2()
n=1/3
ln=n
zetasup2=1/9
Do j=1
n=n*zetasup2
newln=ln+n/(2*j+1)
If newln=ln Then
Return 2*ln
ln=newln
End
::Method LN2
v=''
v=v||0.69314718055994530941723212145817656807
v=v||5500134360255254120680009493393621969694
v=v||7156058633269964186875420014810205706857
v=v||3368552023575813055703267075163507596193
v=v||0727570828371435190307038623891673471123
v=v||3501153644979552391204751726815749320651
v=v||5552473413952588295045300709532636664265
v=v||4104239157814952043740430385500801944170
v=v||6416715186447128399681717845469570262716
v=v||3106454615025720740248163777338963855069
v=v||5260668341137273873722928956493547025762
v=v||6520988596932019650585547647033067936544
v=v||3254763274495125040606943814710468994650
v=v||6220167720424524529612687946546193165174
v=v||6813926725041038025462596568691441928716
v=v||0829380317271436778265487756648508567407
v=v||7648451464439940461422603193096735402574
v=v||4460703080960850474866385231381816767514
v=v||3866747664789088143714198549423151997354
v=v||8803751658612753529166100071053558249879
v=v||4147295092931138971559982056543928717000
v=v||7218085761025236889213244971389320378439
v=v||3530887748259701715591070882368362758984
v=v||2589185353024363421436706118923678919237
v=v||231467232172053401649256872747782344535348
return V
::Method log10
/***********************************************************************
* Return log10(x,prec) specified precision
***********************************************************************/
Expose precision
Use Strict Arg x,xprec=(precision)
iprec=xprec+10
r=self~log(x,iprec,10)
Numeric Digits xprec
Return (r+0)
::Method pi
/* REXX *************************************************************
* Return pi with the specified precision
********************************************************************/
Expose precision
Use Strict Arg xprec=(precision)
p='3.141592653589793238462643383279502884197169399375'||,
'10582097494459230781640628620899862803482534211706'||,
'79821480865132823066470938446095505822317253594081'||,
'28481117450284102701938521105559644622948954930381'||,
'96442881097566593344612847564823378678316527120190'||,
'91456485669234603486104543266482133936072602491412'||,
'73724587006606315588174881520920962829254091715364'||,
'36789259036001133053054882046652138414695194151160'||,
'94330572703657595919530921861173819326117931051185'||,
'48074462379962749567351885752724891227938183011949'||,
'12983367336244065664308602139494639522473719070217'||,
'98609437027705392171762931767523846748184676694051'||,
'32000568127145263560827785771342757789609173637178'||,
'72146844090122495343014654958537105079227968925892'||,
'35420199561121290219608640344181598136297747713099'||,
'60518707211349999998372978049951059731732816096318'||,
'59502445945534690830264252230825334468503526193118'||,
'81710100031378387528865875332083814206171776691473'||,
'03598253490428755468731159562863882353787593751957'||,
'781857780532171226806613001927876611195909216420199'
If xprec>1000 Then Do /* more than 1000 digits wanted */
iprec=xprec+10 /* internal precision */
Numeric Digits iprec
new=1
a=sqrt(2,iprec)
b=0
p=2+a
Do i=1 By 1 Until p=pi
pi=p
y=self~sqrt(a,iprec)
a1=(y+1/y)/2
b1=y*(b+1)/(b+a)
p=pi*b1*(1+a1)/(1+b1)
a=a1
b=b1
End
End
Numeric Digits xprec
Return (p+0)
::Method power
/***********************************************************************
* power(base,exponent,precision) returns base**exponent
* -- with specified precision
***********************************************************************/
Expose precision
Use Strict Arg b,c,xprec=(precision)
Numeric Digits xprec
rsign=1
If b<0 Then Do /* negative base */
If datatype(c,'W') Then Do /* Exponent is an integer */
If c//2=1 Then /* .. an odd number */
rsign=-1 /* Resuld will be negative */
b=abs(b) /* proceed with positive base */
End
Else Do /* Exponent is not an integer */
-- Say 'for a negative base ('||b')',
-- 'exponent ('c') must be an integer'
Return 'nan' /* Return not a number */
End
End
If c=0 Then Do
If b>=0 Then
r=1
End
Else
r=self~exp(c,xprec,b)
If datatype(r)<>'NUM' Then
Return r
Return rsign*r
::Method sqrt
/* REXX *************************************************************
* Return sqrt(x,precision) -- with the specified precision
********************************************************************/
Expose precision type
Use Strict Arg x,xprec=(precision)
If x<0 Then Do
Return 'nan'
End
iprec=xprec+10
Numeric Digits iprec
r0= x
r = 1
Do i=1 By 1 Until r=r0 | (abs(r*r-x)<10**-iprec)
r0 = r
r = (r + x/r) / 2
End
Numeric Digits xprec
Return (r+0)
::Method sin
/* REXX *************************************************************
* Return sin(x,precision,type) -- with the specified precision
* xtype = 'R' (radians, default) 'D' (degrees) 'G' (grades)
* sin(x) = x-(x**3/3!)+(x**5/5!)-(x**7/7!)+-...
********************************************************************/
Expose precision type
Use Strict Arg x,xprec=(precision),xtype=(type)
iprec=xprec+10 /* internal precision */
Numeric Digits iprec
/* first use pi constant or compute it if necessary */
pi=self~pi(iprec)
/* normalize x to be between 0 and 2*pi (or equivalent) */
/* and convert degrees or grades to radians */
xx=x
Select
When xtype='R' Then Do
Do While xx>=pi*2; xx=xx-pi*2; End
Do While xx<0; xx=xx+pi*2; End
End
When xtype='D' Then Do
Do While xx>=360; xx=xx-360; End
Do While xx<0; xx=xx+360; End
xx=xx*pi/180
End
When xtype='G' Then Do
Do While xx>=400; xx=xx-400; End
Do While xx<0; xx=xx+400; End
xx=xx*pi/200
End
End
/* normalize xx to be between 0 and pi/2 */
sign=1
Select
When xx<=pi/2 Then Nop
When xx<=pi Then xx=pi-xx
When xx<=3*pi/2 Then Do; sign=-1; xx=xx-pi; End
Otherwise Do; sign=-1; xx=2*pi-xx; End
End
/* now compute the Taylor series for the normalized xx */
o=xx
u=1
r=xx
If abs(xx)<10**(-iprec) Then
r=0
Else Do
Do i=3 By 2 Until ra=r
ra=r
o=-o*xx*xx
u=u*i*(i-1)
r=r+(o/u)
End
End
Numeric Digits xprec
Return sign*(r+0)
::Method sinh
/* REXX ****************************************************************
* Return sinh(x,precision) -- with specified precision
* sinh(x) = x+(x**3/3!)+(x**5/5!)+(x**7/7!)+-...
* 920903 Walter Pachl
***********************************************************************/
Expose precision
Use Strict Arg x,xprec=(precision)
iprec=xprec+10
Numeric Digits iprec
o=x
u=1
r=x
Do i=3 By 2 Until ra=r
ra=r
o=o*x*x
u=u*i*(i-1)
r=r+(o/u)
End
Numeric Digits xprec
Return (r+0)
::Method tan
/* REXX *************************************************************
* Return tan(x,precision,type) -- with the specified precision
* tan(x)=sin(x)/cos(x)
********************************************************************/
Expose precision type
Use Strict Arg x,xprec=(precision),xtype=(type)
iprec=xprec+10
Numeric Digits iprec
s=self~sin(x,iprec,xtype)
c=self~cos(x,iprec,xtype)
If c=0 Then
Return '+infinity'
t=s/c
Numeric Digits xprec
Return (t+0)
::Method tanh
/***********************************************************************
* Return tanh(x,precision) -- with specified precision
* tanh(x) = sinh(x)/cosh(x)
***********************************************************************/
Expose precision
Use Strict Arg x,xprec=(precision)
iprec=xprec+10
Numeric Digits iprec
r=self~sinh(x,iprec)/self~cosh(x,iprec)
Numeric Digits xprec
Return (r+0)
::routine rxmarccos public
Use Strict Arg x,xprec=(.my.rxm~precision),xtype=(.my.rxm~type)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If x<-1 | 1<x Then
Return 'nan'
return .my.rxm~arccos(x,xprec,xtype)
::routine rxmarcsin public
Use Strict Arg x,xprec=(.my.rxm~precision),xtype=(.my.rxm~type)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If wordpos(xtype,'R D G')=0 Then Do
-- Say 'Argument 3 must be R, D, or G'
Raise Syntax 88.907 array(3,'R, D, or G',xtype)
End
If x<-1 | 1<x Then
Return 'nan'
return .my.rxm~arcsin(x,xprec,xtype)
::routine rxmarctan public
Use Strict Arg x,xprec=(.my.rxm~precision),xtype=(.my.rxm~type)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If wordpos(xtype,'R D G')=0 Then Do
-- Say 'Argument 3 must be R, D, or G'
Raise Syntax 88.907 array(3,'R, D, or G',xtype)
End
return .my.rxm~arctan(x,xprec,xtype)
::routine rxmarsinh public
Use Strict Arg x,xprec=(.my.rxm~precision)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
return .my.rxm~arsinh(x,xprec)
::routine rxmcos public
Use Strict Arg x,xprec=(.my.rxm~precision),xtype=(.my.rxm~type)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If wordpos(xtype,'R D G')=0 Then Do
-- Say 'Argument 3 must be R, D, or G'
Raise Syntax 88.907 array(3,'R, D, or G',xtype)
End
return .my.rxm~cos(x,xprec,xtype)
::routine rxmcosh public
Use Strict Arg x,xprec=(.my.rxm~precision)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
return .my.rxm~cosh(x,xprec)
::routine rxmcotan public
Use Strict Arg x,xprec=(.my.rxm~precision),xtype=(.my.rxm~type)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If wordpos(xtype,'R D G')=0 Then Do
-- Say 'Argument 3 must be R, D, or G'
Raise Syntax 88.907 array(3,'R, D, or G',xtype)
End
return .my.rxm~cotan(x,xprec)
::routine rxmexp public
Use Strict Arg x,xprec=(.my.rxm~precision),xbase=''
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If datatype(xbase,'NUM')=0 & xbase<>'' Then Do
-- Say 'Argument 3 must be omitted or a number'
Raise Syntax 88.902 array(3,xbase)
End
Select
When x<0 Then Do
iprec=xprec+10
Numeric Digits iprec
z=.my.rxm~exp(abs(x),iprec,xbase)
Select
When z=0 Then Return '+infinity'
When datatype(z)<>'NUM' Then Return z
Otherwise r=1/z
End
Numeric Digits xprec
return r+0
End
When x=0 Then Do
If xbase=0 Then
Return 'nan'
Else
Return 1
End
Otherwise
return .my.rxm~exp(x,xprec,xbase)
End
::routine rxmlog public
Use Strict Arg x,xprec=(.my.rxm~precision),xbase=''
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If xbase<>'' &,
datatype(xbase,'NUM')=0 Then Do
-- Say 'Argument 3 must be a number'
Raise Syntax 88.902 array(3,xbase)
End
If x=0 Then
Return '-infinity'
If x<0 Then
Return 'nan'
return .my.rxm~log(x,xprec,xbase)
::routine rxmlog10 public
Use Strict Arg x,xprec=(.my.rxm~precision)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If x=0 Then
Return '-infinity'
If x<0 Then
Return 'nan'
return .my.rxm~log10(x,xprec)
::routine rxmpi public
Use Strict Arg xprec=(.my.rxm~precision)
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
return .my.rxm~pi(xprec)
::routine rxmpower public
Use Strict Arg b,e,xprec=(.my.rxm~precision)
If datatype(b,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,b)
End
If datatype(e,'NUM')=0 Then Do
-- Say 'Argument 2 must be a number'
Raise Syntax 88.902 array(2,e)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 3 must be a whole number between 1 and 999999'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 3 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(3,1,999999,xprec)
End
If b<0 & datatype(e,'W')=0 Then
Return 'nan'
return .my.rxm~power(b,e,xprec)
::routine rxmsqrt public
Use Strict Arg x,xprec=(.my.rxm~precision)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
Select
When x<0 Then Return 'nan'
When x=0 Then Return 0
Otherwise
return .my.rxm~sqrt(x,xprec)
End
::routine rxmsin public
Use Strict Arg x,xprec=(.my.rxm~precision),xtype=(.my.rxm~type)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If wordpos(xtype,'R D G')=0 Then Do
-- Say 'Argument 3 must be R, D, or G'
Raise Syntax 88.907 array(3,'R, D, or G',xtype)
End
return .my.rxm~sin(x,xprec,xtype)
::routine rxmsinh public
Use Strict Arg x,xprec=(.my.rxm~precision)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
return .my.rxm~sinh(x,xprec)
::routine rxmtan public
Use Strict Arg x,xprec=(.my.rxm~precision),xtype=(.my.rxm~type)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
If wordpos(xtype,'R D G')=0 Then Do
-- Say 'Argument 3 must be R, D, or G'
Raise Syntax 88.907 array(3,'R, D, or G',xtype)
End
return .my.rxm~tan(x,xprec,xtype)
::routine rxmtanh public
Use Strict Arg x,xprec=(.my.rxm~precision)
If datatype(x,'NUM')=0 Then Do
-- Say 'Argument 1 must be a number'
Raise Syntax 88.902 array(1,x)
End
If datatype(xprec,'W')=0 Then Do
-- Say 'Argument 2 must be a positive whole number'
Raise Syntax 88.905 array(2,xprec)
End
If xprec<1 | 999999<xprec Then Do
-- Say 'Argument 2 must be a whole number between 1 and 999999'
Raise Syntax 88.907 array(2,1,999999,xprec)
End
return .my.rxm~tanh(x,xprec)
::routine rxmhelp public
Use Arg xprec=(.my.rxm~precision),xtype=(.my.rxm~type)
Say 'precision='xprec
Say ' type='xtype
Parse source s; Say ' source='s
Parse version v; Say ' version='v
Do si=2 To 5
Say substr(sourceline(si),3)
End
Say 'You can change the default precision and type as follows:'
Say " .locaL~my.rxm~precision=50"
Say " .locaL~my.rxm~type='R'"
return 0
Reference in a new issue View git blame Copy permalink