1 
2 #define BLAS_FUNC(NAME) CAT(CAT(SCALAR_PREFIX,NAME),_)
3 
4 template<> class blas_interface<SCALAR> : public c_interface_base<SCALAR>
5 {
6 
7 public :
8 
9   static SCALAR fone;
10   static SCALAR fzero;
11 
name()12   static inline std::string name()
13   {
14     return MAKE_STRING(CBLASNAME);
15   }
16 
matrix_vector_product(gene_matrix & A,gene_vector & B,gene_vector & X,int N)17   static inline void matrix_vector_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
18     BLAS_FUNC(gemv)(&notrans,&N,&N,&fone,A,&N,B,&intone,&fzero,X,&intone);
19   }
20 
symv(gene_matrix & A,gene_vector & B,gene_vector & X,int N)21   static inline void symv(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
22     BLAS_FUNC(symv)(&lower, &N,&fone,A,&N,B,&intone,&fzero,X,&intone);
23   }
24 
syr2(gene_matrix & A,gene_vector & B,gene_vector & X,int N)25   static inline void syr2(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
26     BLAS_FUNC(syr2)(&lower,&N,&fone,B,&intone,X,&intone,A,&N);
27   }
28 
ger(gene_matrix & A,gene_vector & X,gene_vector & Y,int N)29   static inline void ger(gene_matrix & A, gene_vector & X, gene_vector & Y, int N){
30     BLAS_FUNC(ger)(&N,&N,&fone,X,&intone,Y,&intone,A,&N);
31   }
32 
rot(gene_vector & A,gene_vector & B,SCALAR c,SCALAR s,int N)33   static inline void rot(gene_vector & A,  gene_vector & B, SCALAR c, SCALAR s, int N){
34     BLAS_FUNC(rot)(&N,A,&intone,B,&intone,&c,&s);
35   }
36 
atv_product(gene_matrix & A,gene_vector & B,gene_vector & X,int N)37   static inline void atv_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
38     BLAS_FUNC(gemv)(&trans,&N,&N,&fone,A,&N,B,&intone,&fzero,X,&intone);
39   }
40 
matrix_matrix_product(gene_matrix & A,gene_matrix & B,gene_matrix & X,int N)41   static inline void matrix_matrix_product(gene_matrix & A, gene_matrix & B, gene_matrix & X, int N){
42     BLAS_FUNC(gemm)(&notrans,&notrans,&N,&N,&N,&fone,A,&N,B,&N,&fzero,X,&N);
43   }
44 
transposed_matrix_matrix_product(gene_matrix & A,gene_matrix & B,gene_matrix & X,int N)45   static inline void transposed_matrix_matrix_product(gene_matrix & A, gene_matrix & B, gene_matrix & X, int N){
46     BLAS_FUNC(gemm)(&notrans,&notrans,&N,&N,&N,&fone,A,&N,B,&N,&fzero,X,&N);
47   }
48 
49 //   static inline void ata_product(gene_matrix & A, gene_matrix & X, int N){
50 //     ssyrk_(&lower,&trans,&N,&N,&fone,A,&N,&fzero,X,&N);
51 //   }
52 
aat_product(gene_matrix & A,gene_matrix & X,int N)53   static inline void aat_product(gene_matrix & A, gene_matrix & X, int N){
54     BLAS_FUNC(syrk)(&lower,&notrans,&N,&N,&fone,A,&N,&fzero,X,&N);
55   }
56 
axpy(SCALAR coef,const gene_vector & X,gene_vector & Y,int N)57   static inline void axpy(SCALAR coef, const gene_vector & X, gene_vector & Y, int N){
58     BLAS_FUNC(axpy)(&N,&coef,X,&intone,Y,&intone);
59   }
60 
axpby(SCALAR a,const gene_vector & X,SCALAR b,gene_vector & Y,int N)61   static inline void axpby(SCALAR a, const gene_vector & X, SCALAR b, gene_vector & Y, int N){
62     BLAS_FUNC(scal)(&N,&b,Y,&intone);
63     BLAS_FUNC(axpy)(&N,&a,X,&intone,Y,&intone);
64   }
65 
cholesky(const gene_matrix & X,gene_matrix & C,int N)66   static inline void cholesky(const gene_matrix & X, gene_matrix & C, int N){
67     int N2 = N*N;
68     BLAS_FUNC(copy)(&N2, X, &intone, C, &intone);
69     char uplo = 'L';
70     int info = 0;
71     BLAS_FUNC(potrf)(&uplo, &N, C, &N, &info);
72     if(info!=0) std::cerr << "potrf_ error " << info << "\n";
73   }
74 
partial_lu_decomp(const gene_matrix & X,gene_matrix & C,int N)75   static inline void partial_lu_decomp(const gene_matrix & X, gene_matrix & C, int N){
76     int N2 = N*N;
77     BLAS_FUNC(copy)(&N2, X, &intone, C, &intone);
78     char uplo = 'L';
79     int info = 0;
80     int * ipiv = (int*)alloca(sizeof(int)*N);
81     BLAS_FUNC(getrf)(&N, &N, C, &N, ipiv, &info);
82     if(info!=0) std::cerr << "getrf_ error " << info << "\n";
83   }
84 
trisolve_lower(const gene_matrix & L,const gene_vector & B,gene_vector & X,int N)85   static inline void trisolve_lower(const gene_matrix & L, const gene_vector& B, gene_vector & X, int N){
86     BLAS_FUNC(copy)(&N, B, &intone, X, &intone);
87     BLAS_FUNC(trsv)(&lower, &notrans, &nonunit, &N, L, &N, X, &intone);
88   }
89 
trisolve_lower_matrix(const gene_matrix & L,const gene_matrix & B,gene_matrix & X,int N)90   static inline void trisolve_lower_matrix(const gene_matrix & L, const gene_matrix& B, gene_matrix & X, int N){
91     BLAS_FUNC(copy)(&N, B, &intone, X, &intone);
92     BLAS_FUNC(trsm)(&right, &lower, &notrans, &nonunit, &N, &N, &fone, L, &N, X, &N);
93   }
94 
trmm(gene_matrix & A,gene_matrix & B,gene_matrix & X,int N)95   static inline void trmm(gene_matrix & A, gene_matrix & B, gene_matrix & X, int N){
96     BLAS_FUNC(trmm)(&left, &lower, &notrans,&nonunit, &N,&N,&fone,A,&N,B,&N);
97   }
98 
99   #ifdef HAS_LAPACK
100 
lu_decomp(const gene_matrix & X,gene_matrix & C,int N)101   static inline void lu_decomp(const gene_matrix & X, gene_matrix & C, int N){
102     int N2 = N*N;
103     BLAS_FUNC(copy)(&N2, X, &intone, C, &intone);
104     char uplo = 'L';
105     int info = 0;
106     int * ipiv = (int*)alloca(sizeof(int)*N);
107     int * jpiv = (int*)alloca(sizeof(int)*N);
108     BLAS_FUNC(getc2)(&N, C, &N, ipiv, jpiv, &info);
109   }
110 
111 
112 
hessenberg(const gene_matrix & X,gene_matrix & C,int N)113   static inline void hessenberg(const gene_matrix & X, gene_matrix & C, int N){
114     {
115       int N2 = N*N;
116       int inc = 1;
117       BLAS_FUNC(copy)(&N2, X, &inc, C, &inc);
118     }
119     int info = 0;
120     int ilo = 1;
121     int ihi = N;
122     int bsize = 64;
123     int worksize = N*bsize;
124     SCALAR* d = new SCALAR[N+worksize];
125     BLAS_FUNC(gehrd)(&N, &ilo, &ihi, C, &N, d, d+N, &worksize, &info);
126     delete[] d;
127   }
128 
tridiagonalization(const gene_matrix & X,gene_matrix & C,int N)129   static inline void tridiagonalization(const gene_matrix & X, gene_matrix & C, int N){
130     {
131       int N2 = N*N;
132       int inc = 1;
133       BLAS_FUNC(copy)(&N2, X, &inc, C, &inc);
134     }
135     char uplo = 'U';
136     int info = 0;
137     int ilo = 1;
138     int ihi = N;
139     int bsize = 64;
140     int worksize = N*bsize;
141     SCALAR* d = new SCALAR[3*N+worksize];
142     BLAS_FUNC(sytrd)(&uplo, &N, C, &N, d, d+N, d+2*N, d+3*N, &worksize, &info);
143     delete[] d;
144   }
145 
146   #endif // HAS_LAPACK
147 
148 };
149 
150 SCALAR blas_interface<SCALAR>::fone = SCALAR(1);
151 SCALAR blas_interface<SCALAR>::fzero = SCALAR(0);
152