RFunction Class Reference

#include <mathexpr.h>

Collaboration diagram for RFunction:

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List of all members.

Public Member Functions
	float ((*pfuncval)(float))
	RFunction ()
	RFunction (float((*)(float)))
	RFunction (const ROperation &opp, RVar *pvarp)
	RFunction (const ROperation &opp, int nvarsp, RVar **ppvarp)
	RFunction (const RFunction &)
	~RFunction ()
RFunction &	operator= (const RFunction &)
void	SetName (const char *s)
float	Val (float) const
float	Val (float *) const
ROperation	operator() (const ROperation &)
Public Attributes
signed char	type
ROperation	op
int	nvars
RVar **	ppvar
char *	name
Private Attributes
float *	buf
Friends
int	operator== (const RFunction &, const RFunction &)

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Detailed Description

Definition at line 124 of file mathexpr.h.

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Constructor & Destructor Documentation

RFunction::RFunction

(

)

Definition at line 85 of file mathexpr.cpp.

References buf, ErrVal, name, NULL, nvars, op, ppvar, and type.

{
    type=-1;name=new char[1];name[0]=0;
    nvars=0;ppvar=NULL;pfuncval=NULL;op=ErrVal;buf=NULL;
}

RFunction::RFunction

(

float((*)(float))

)

RFunction::RFunction	(	const ROperation &	opp,
		RVar *	pvarp
	)

Definition at line 111 of file mathexpr.cpp.

References buf, name, nvars, ppvar, and type.

                                                     :op(opp)
{
    type=1;name=new char[1];name[0]=0;
    nvars=1;ppvar=new PRVar[1];ppvar[0]=pvarp;buf=new float[1];
}

RFunction::RFunction	(	const ROperation &	opp,
		int	nvarsp,
		RVar **	ppvarp
	)

Definition at line 117 of file mathexpr.cpp.

References buf, name, NULL, nvars, ppvar, and type.

                                                                  :op(opp)
{
    type=1;name=new char[1];name[0]=0;
    nvars=nvarsp;
    if(nvars){
        ppvar=new PRVar[nvars];
        int i;for(i=0;i<nvars;i++)ppvar[i]=ppvarp[i];
        buf=new float[nvars];
    }else {ppvar=NULL;buf=NULL;}
}

RFunction::RFunction

(

const RFunction &

rfunc

)

Definition at line 97 of file mathexpr.cpp.

References buf, CopyStr(), name, NULL, nvars, op, ppvar, and type.

{
    if(this==&rfunc)return;
    type=rfunc.type;op=rfunc.op;
    pfuncval=rfunc.pfuncval;
    name=CopyStr(rfunc.name);
    nvars=rfunc.nvars;
    if(rfunc.ppvar!=NULL&&nvars){
        ppvar=new PRVar[nvars];
        int i;for(i=0;i<nvars;i++)ppvar[i]=rfunc.ppvar[i];
        buf=new float[nvars];
    }else {ppvar=NULL;buf=NULL;}
}

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RFunction::~RFunction

(

)

Definition at line 128 of file mathexpr.cpp.

References buf, name, NULL, and ppvar.

{
    if(name!=NULL)delete[]name;
    if(ppvar!=NULL)delete[]ppvar;
    if(buf!=NULL)delete[]buf;
}

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Member Function Documentation

RFunction::float

(

(*)(float)

pfuncval

)

RFunction & RFunction::operator=

(

const RFunction &

rfunc

)

Definition at line 135 of file mathexpr.cpp.

References buf, CopyStr(), name, NULL, nvars, op, ppvar, and type.

{
    if(this==&rfunc)return *this;
    type=rfunc.type;op=rfunc.op;
    pfuncval=rfunc.pfuncval;
    delete[]name;
    name=CopyStr(rfunc.name);
    if(ppvar!=NULL)delete[]ppvar;
    ppvar=NULL;
    if(buf!=NULL)delete[]buf;
    buf=NULL;
    nvars=rfunc.nvars;
    if(type==1&&nvars){
        ppvar=new PRVar[nvars];buf=new float[nvars];
        int i;for(i=0;i<nvars;i++)ppvar[i]=rfunc.ppvar[i];
    }
    return *this;
}

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void RFunction::SetName

(

const char *

s

)

Definition at line 154 of file mathexpr.cpp.

References CopyStr(), name, and NULL.

Referenced by vValue::Expr::Bindings::MathExpr::MathExpr(), and ROperation::NthMember().

{if(name!=NULL)delete[]name;name=CopyStr(s);}

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float RFunction::Val

(

float

x

)

const

Definition at line 157 of file mathexpr.cpp.

References ErrVal, nvars, op, type, and ROperation::Val().

Referenced by ApplyRFunc().

{
    if(type==-1||nvars>=2)return ErrVal;
    if(type==0)return (*pfuncval)(x);
    float xb=*(*ppvar)->pval,y;
    *(*ppvar)->pval=x;  // Warning : could cause trouble if this value is used in a parallel process
    y=op.Val();
    *(*ppvar)->pval=xb;
    return y;
}

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float RFunction::Val

(

float *

pv

)

const

Definition at line 168 of file mathexpr.cpp.

References buf, ErrVal, nvars, op, ppvar, RVar::pval, type, and ROperation::Val().

{
    if(type==-1)return ErrVal;
    if(type==0)return (*pfuncval)(*pv);
    float y;
    int i;
    for(i=0;i<nvars;i++){
        buf[i]=*ppvar[i]->pval;
        // Warning : could cause trouble if this value is used in a parallel process
        *ppvar[i]->pval=pv[i];
    }
    y=op.Val();
    for(i=0;i<nvars;i++)*ppvar[i]->pval=buf[i];
    return y;
}

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ROperation RFunction::operator()

(

const ROperation &

op

)

Definition at line 353 of file mathexpr.cpp.

References Fun, ROperation::mmb2, ROperation::op, and ROperation::pfunc.

{
    /* Code to use to replace expcitly instead of using a pointer to
       if(nvars!=op.NMembers()||type==-1||type==0)return ErrVal;
       ROperation op2=*pop;int i;
       RVar**ppvar2=new PRVar[nvars];char s[11]="";
       for(i=0;i<nvars;i++){
       sprintf(s,";var%i;",i);
       ppvar2[i]=new RVar(s,NULL);
       op2=op2.Substitute(*ppvar[i],(ROperation)*ppvar2[i]);
       }
       for(i=0;i<nvars;i++){
       op2=op2.Substitute(*ppvar2[i],op.NthMember(i+1));
       delete ppvar2[i];
       }
       delete[]ppvar2;
       return op2;
    */
    ROperation op2;op2.op=Fun;op2.pfunc=this;op2.mmb2=new ROperation(op);
    return op2;
}

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Friends And Related Function Documentation

int operator==	(	const RFunction &	f1,
		const RFunction &	f2
	)			[friend]

Definition at line 685 of file mathexpr.cpp.

{
    if(f1.type!=f2.type)return 0;
    if(f1.type==-1)return 1; // Nonfunction==nonfunction
    if(f1.type==0)return (f1.pfuncval==f2.pfuncval&&EqStr(f1.name,f2.name));
    if(f1.op!=f2.op)return 0;
    if(!EqStr(f1.name,f2.name))return 0;
    if(f1.nvars!=f2.nvars)return 0;
    int i;
    for(i=0;i<f1.nvars;i++)if(!(*f1.ppvar[i]==*f2.ppvar[i]))return 0;
    return 1;
}

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Member Data Documentation

float* RFunction::buf [private]

Definition at line 125 of file mathexpr.h.

Referenced by operator=(), RFunction(), Val(), and ~RFunction().

signed char RFunction::type

Definition at line 127 of file mathexpr.h.

Referenced by ROperation::Diff(), ROperation::HasError(), ROperation::NMembers(), ROperation::NthMember(), operator=(), operator==(), RFunction(), and Val().

ROperation RFunction::op

Definition at line 129 of file mathexpr.h.

Referenced by ROperation::ContainFunc(), ROperation::Diff(), ROperation::HasError(), ROperation::NMembers(), ROperation::NthMember(), operator=(), operator==(), RFunction(), and Val().

int RFunction::nvars

Definition at line 129 of file mathexpr.h.

Referenced by ApplyRFunc(), ROperation::Diff(), ROperation::NthMember(), operator=(), operator==(), RFunction(), ROperation::ROperation(), and Val().

RVar** RFunction::ppvar

Definition at line 129 of file mathexpr.h.

Referenced by ROperation::Diff(), ROperation::NthMember(), operator=(), operator==(), RFunction(), Val(), and ~RFunction().

char* RFunction::name

Definition at line 130 of file mathexpr.h.

Referenced by ROperation::Expr(), IsFunction(), IsVar(), ROperation::NthMember(), operator=(), operator==(), RFunction(), SetName(), and ~RFunction().

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The documentation for this class was generated from the following files:

• src/thirdparty/mathexpr/mathexpr.h
• src/thirdparty/mathexpr/mathexpr.cpp

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