8a25603c63490a11def80a7e146ca9ba06b64cec
[Faustine.git] / interpretor / faust-0.9.47mr3 / compiler / extended / cosprim.cpp
1 #include "xtended.hh"
2 #include "Text.hh"
3 #include <math.h>
4
5 #include "floats.hh"
6
7 class CosPrim : public xtended
8 {
9
10 public:
11
12 CosPrim() : xtended("cos") {}
13
14 virtual unsigned int arity () { return 1; }
15
16 virtual bool needCache () { return true; }
17
18 virtual Type infereSigType (const vector<Type>& args)
19 {
20 assert (args.size() == 1);
21 return castInterval(floatCast(args[0]), interval(-1,1));
22 }
23
24 virtual void sigVisit (Tree sig, sigvisitor* visitor) {}
25
26 virtual int infereSigOrder (const vector<int>& args) {
27 return args[0];
28 }
29
30
31 virtual Tree computeSigOutput (const vector<Tree>& args) {
32 num n;
33 if (isNum(args[0],n)) {
34 return tree(cos(double(n)));
35 } else {
36 return tree(symbol(), args[0]);
37 }
38 }
39
40 virtual string generateCode (Klass* klass, const vector<string>& args, const vector<Type>& types)
41 {
42 assert (args.size() == arity());
43 assert (types.size() == arity());
44
45 return subst("cos$1($0)", args[0], isuffix());
46 }
47
48 virtual string generateLateq (Lateq* lateq, const vector<string>& args, const vector<Type>& types)
49 {
50 assert (args.size() == arity());
51 assert (types.size() == arity());
52
53 return subst("\\cos\\left($0\\right)", args[0]);
54 }
55
56 };
57
58
59 xtended* gCosPrim = new CosPrim();
60
61