diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/opcodes.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/opcodes.c b/src/opcodes.c new file mode 100644 index 0000000..5bc30ef --- /dev/null +++ b/src/opcodes.c @@ -0,0 +1,49 @@ +/* + 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 |