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/*
opcodes.cpp
Copyright (C) 2021 Richard Knight
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "csdl.h"
// struct for numeric opcode
typedef struct _nstrexists_t {
OPDS h;
MYFLT *out;
MYFLT *in;
} nstrexists_t;
// numeric opcode
int nstrexists(CSOUND *csound, nstrexists_t *p) {
if (NULL != csound->GetInstrument(csound, (int)*p->in, NULL)) {
*(p->out) = FL(1);
} else {
*(p->out) = FL(0);
}
return OK;
}
static OENTRY localops[] = {
{"nstrexists", sizeof(nstrexists_t), 0, 1, "i", "i", (SUBR) nstrexists, NULL, NULL},
{"nstrexists.k", sizeof(nstrexists_t), 0, 3, "k", "k", (SUBR) nstrexists, (SUBR) nstrexists, NULL},
};
LINKAGE
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