1 /*
2  * cblas_ztpmv.c
3  * The program is a C interface to ztpmv.
4  *
5  * Keita Teranishi  5/20/98
6  *
7  */
8 #include "cblas.h"
9 #include "cblas_f77.h"
cblas_ztpmv(const enum CBLAS_ORDER order,const enum CBLAS_UPLO Uplo,const enum CBLAS_TRANSPOSE TransA,const enum CBLAS_DIAG Diag,const int N,const void * Ap,void * X,const int incX)10 void cblas_ztpmv(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
11                  const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_DIAG Diag,
12                  const int N, const void  *Ap, void  *X, const int incX)
13 {
14    char TA;
15    char UL;
16    char DI;
17 #ifdef F77_CHAR
18    F77_CHAR F77_TA, F77_UL, F77_DI;
19 #else
20    #define F77_TA &TA
21    #define F77_UL &UL
22    #define F77_DI &DI
23 #endif
24 #ifdef F77_INT
25    F77_INT F77_N=N, F77_incX=incX;
26 #else
27    #define F77_N N
28    #define F77_incX incX
29 #endif
30    int n, i=0, tincX;
31    double *st=0,*x=(double *)X;
32    extern int CBLAS_CallFromC;
33    extern int RowMajorStrg;
34    RowMajorStrg = 0;
35 
36    CBLAS_CallFromC = 1;
37    if (order == CblasColMajor)
38    {
39       if (Uplo == CblasUpper) UL = 'U';
40       else if (Uplo == CblasLower) UL = 'L';
41       else
42       {
43          cblas_xerbla(2, "cblas_ztpmv","Illegal Uplo setting, %d\n", Uplo);
44          CBLAS_CallFromC = 0;
45          RowMajorStrg = 0;
46          return;
47       }
48       if (TransA == CblasNoTrans) TA = 'N';
49       else if (TransA == CblasTrans) TA = 'T';
50       else if (TransA == CblasConjTrans) TA = 'C';
51       else
52       {
53          cblas_xerbla(3, "cblas_ztpmv","Illegal TransA setting, %d\n", TransA);
54          CBLAS_CallFromC = 0;
55          RowMajorStrg = 0;
56          return;
57       }
58       if (Diag == CblasUnit) DI = 'U';
59       else if (Diag == CblasNonUnit) DI = 'N';
60       else
61       {
62          cblas_xerbla(4, "cblas_ztpmv","Illegal Diag setting, %d\n", Diag);
63          CBLAS_CallFromC = 0;
64          RowMajorStrg = 0;
65          return;
66       }
67       #ifdef F77_CHAR
68          F77_UL = C2F_CHAR(&UL);
69          F77_TA = C2F_CHAR(&TA);
70          F77_DI = C2F_CHAR(&DI);
71       #endif
72       F77_ztpmv( F77_UL, F77_TA, F77_DI, &F77_N, Ap, X, &F77_incX);
73    }
74    else if (order == CblasRowMajor)
75    {
76       RowMajorStrg = 1;
77       if (Uplo == CblasUpper) UL = 'L';
78       else if (Uplo == CblasLower) UL = 'U';
79       else
80       {
81          cblas_xerbla(2, "cblas_ztpmv","Illegal Uplo setting, %d\n", Uplo);
82          CBLAS_CallFromC = 0;
83          RowMajorStrg = 0;
84          return;
85       }
86 
87       if (TransA == CblasNoTrans) TA = 'T';
88       else if (TransA == CblasTrans) TA = 'N';
89       else if (TransA == CblasConjTrans)
90       {
91          TA = 'N';
92          if ( N > 0)
93          {
94             if(incX > 0)
95                tincX = incX;
96             else
97                tincX = -incX;
98             i = tincX << 1;
99             n = i * N;
100             x++;
101             st = x + n;
102             do
103             {
104                *x = -(*x);
105                x += i;
106             }
107             while (x != st);
108             x -= n;
109          }
110       }
111       else
112       {
113          cblas_xerbla(3, "cblas_ztpmv","Illegal TransA setting, %d\n", TransA);
114          CBLAS_CallFromC = 0;
115          RowMajorStrg = 0;
116          return;
117       }
118 
119       if (Diag == CblasUnit) DI = 'U';
120       else if (Diag == CblasNonUnit) DI = 'N';
121       else
122       {
123          cblas_xerbla(4, "cblas_ztpmv","Illegal Diag setting, %d\n", Diag);
124          CBLAS_CallFromC = 0;
125          RowMajorStrg = 0;
126          return;
127       }
128       #ifdef F77_CHAR
129          F77_UL = C2F_CHAR(&UL);
130          F77_TA = C2F_CHAR(&TA);
131          F77_DI = C2F_CHAR(&DI);
132       #endif
133 
134       F77_ztpmv( F77_UL, F77_TA, F77_DI, &F77_N, Ap, X,&F77_incX);
135       if (TransA == CblasConjTrans)
136       {
137          if (N > 0)
138          {
139             do
140             {
141                *x = -(*x);
142                x += i;
143             }
144             while (x != st);
145          }
146       }
147    }
148    else cblas_xerbla(1, "cblas_ztpmv", "Illegal Order setting, %d\n", order);
149    CBLAS_CallFromC = 0;
150    RowMajorStrg = 0;
151    return;
152 }
153