1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/*
tabsum.c:
Copyright (C) 2009 John ffitch
This file is part of Csound.
The Csound Library 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 2.1 of the License, or (at your option) any later version.
Csound 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 Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "csoundCore.h"
#include "interlocks.h"
typedef struct {
OPDS h;
MYFLT *kans;
MYFLT *itab;
MYFLT *kmin, *kmax;
/* Local */
FUNC *ftp;
} TABSUM;
static int32_t tabsuminit(CSOUND *csound, TABSUM *p)
{
if (UNLIKELY((p->ftp = csound->FTnp2Find(csound, p->itab)) == NULL)) {
return csound->InitError(csound, Str("tabsum: No table"));
}
return OK;
}
static int32_t tabsum(CSOUND *csound, TABSUM *p)
{
int32_t i, min, max;
MYFLT ans = FL(0.0);
FUNC *ftp = p->ftp;
MYFLT *t;
if (UNLIKELY(ftp==NULL))
return csound->PerfError(csound, &(p->h),
Str("tabsum: Not initialised"));
t = p->ftp->ftable;
min = MYFLT2LRND(*p->kmin);
max = MYFLT2LRND(*p->kmax);
if (UNLIKELY(min == 0 && max == 0)) max = ftp->flen-1;
else if (UNLIKELY(min > max)) {
int32_t k = min; min = max; max = k;
}
/* printf("tabsum: min, max = %d, %d\n", min, max); */
for (i=min; i<=max; i++) ans += t[i];
*p->kans = ans;
return OK;
}
#define S(x) sizeof(x)
static OENTRY tabsum_localops[] = {
{ "tabsum", S(TABSUM), 0, 3, "k", "iOO",
(SUBR)tabsuminit, (SUBR)tabsum },
};
LINKAGE_BUILTIN(tabsum_localops)
|
