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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
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Calling Sequence
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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)
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Parameters
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kv
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kernel handle of type MKernelVector
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format
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output format specification
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hw_arg1, ..., hw_argN
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hardware data
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mpl_arg1, ..., mpl_argN
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type ALGEB objects
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Description
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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*).
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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.
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MapleALGEB_SPrintf is the same as the Maple sprintf function. It returns a Maple String object containing the formatted output.
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When an argument to MapleALGEB_Printf or MapleALGEB_SPrintf is an expression sequence, it is formatted as if it were a list.
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Examples
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#include "maplec.h"
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ALGEB M_DECL MyArgs( MKernelVector kv, ALGEB *args )
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{
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M_INT i, n;
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MaplePrintf(kv,"External routine called with %ld argumentsn",
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(long)(n=MapleNumArgs(kv,(ALGEB)args)));
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for( i=1; i<=n; ++i ) {
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MapleALGEB_Printf(kv,"arg[%d] = %an",ToMapleInteger(kv,i),args[i]);
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}
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if( n == 0 )
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return( ToMapleString(kv,"") );
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else
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return( MapleALGEB_SPrintf(kv,"%a",args[1]) );
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}
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Execute the external function from Maple.
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>
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>
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>
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>
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External routine called with 2 arguments
arg[1] = 1
arg[2] = 2
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![show(x^2+1, [1, 2], sqrt(2))](/support/helpjp/helpview.aspx?si=7966/file06255/math236.png)
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External routine called with 3 arguments
arg[1] = x^2+1
arg[2] = [1, 2]
arg[3] = 2^(1/2)
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| (2) |
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