MapleLibName - Maple Programming Help

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MapleLibName

set or query libname in external code

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

MapleLibName(kv, val)

Parameters

kv

-

kernel handle of type MKernelVector

val

-

expression sequence object containing strings

Description

• 

This function can be used in external code with OpenMaple or define_external.

• 

MapleLibName returns the currently assigned value of libname, which controls the location of Maple libraries. If val is not NULL, then it also tries to assign libnameval.

• 

Never directly modify the expression sequence returned by MapleLibName. Always create a new expression sequence to change the value.

Examples

    #include <string.h>

    #include "maplec.h"

    ALGEB M_DECL MyLoadPackage( MKernelVector kv, ALGEB *args )

    {

    M_INT n, i;

    ALGEB libname, newlibname;

    char *mylib, buf[1024];

    mylib = getenv("HOME");

    if( mylib ) {

        mylib = strncpy(buf,mylib,1010);

        mylib[1010] = '0';

    }

    else {

        mylib = strcpy(buf,"/usr/local");

    }

    strcat(mylib,"/tool_lib");

    libname = MapleLibName(kv,NULL);

    n = MapleNumArgs(kv,libname);

    newlibname = NewMapleExpressionSequence(kv,n+1);

    for( i=1; i<=n; ++i ) {

        newlibname[i] = libname[i];

    }

    ((ALGEB*)newlibname)[i] = ToMapleString(kv,mylib);

    MapleLibName(kv,newlibname);

    return( ToMapleBoolean(kv,TRUE) );

    }

Execute the external function from Maple.

withExternalCalling&colon;

dllExternalLibraryNameHelpExamples&colon;

initDefineExternalMyLoadPackage&comma;dll&colon;

libname

/usr/local/maple/lib

(1)

init

true

(2)

libname

/usr/local/maple/lib&comma;/home/paul/tool_lib

(3)

See Also

CustomWrapper

define_external

exprseq

OpenMaple

OpenMaple/C/API

OpenMaple/C/Examples

 


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