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MaplePrintf - write formatted output to the Maple user interface from external code
MapleALGEB_Printf - write formatted output to the Maple user interface from external code
MapleALGEB_SPrintf - write formatted output to a string in external code
Calling Sequence
MaplePrintf(kv, format, hw_arg1, hw_arg2, ..., hw_argN)
MapleALGEB_Printf(kv, format, mpl_arg1, mpl_arg2, ..., mpl_argN)
MapleALGEB_SPrintf(kv, format, mpl_arg1, mpl_arg2, ..., mpl_argN)
Parameters
kv
-
kernel handle of type MKernelVector
format
output format specification
hw_arg1, ..., hw_argN
hardware data
mpl_arg1, ..., mpl_argN
type ALGEB objects
Description
These functions can be used in external code with OpenMaple or define_external.
MaplePrintf is the same as the printf function in the C standard library, except that it directs output to the Maple user interface instead of stdout. The extra arguments must all be hardware types (for example, int, float, and char*).
MapleALGEB_Printf is the same as the Maple printf function. The extra arguments must all be Maple objects (of type ALGEB). Of note in the format specification, %a, formats an object of any Maple type, whereas, for example, %d formats only Maple integers.
MapleALGEB_SPrintf is the same as the Maple sprintf function. It returns a Maple String object containing the formatted output.
When an argument to MapleALGEB_Printf or MapleALGEB_SPrintf is an expression sequence, it is formatted as if it were a list.
Examples
#include "maplec.h"
ALGEB M_DECL MyArgs( MKernelVector kv, ALGEB *args )
{
M_INT i, n;
MaplePrintf(kv,"External routine called with %ld argumentsn",
(long)(n=MapleNumArgs(kv,(ALGEB)args)));
for( i=1; i<=n; ++i ) {
MapleALGEB_Printf(kv,"arg[%d] = %an",ToMapleInteger(kv,i),args[i]);
}
if( n == 0 )
return( ToMapleString(kv,"") );
else
return( MapleALGEB_SPrintf(kv,"%a",args[1]) );
Execute the external function from Maple.
External routine called with 2 arguments arg[1] = 1 arg[2] = 2
External routine called with 3 arguments arg[1] = x^2+1 arg[2] = [1, 2] arg[3] = 2^(1/2)
See Also
CustomWrapper, define_external, OpenMaple, OpenMaple/C/API, OpenMaple/C/Examples, printf, sprintf
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