| Tim Murray | 81253e9 | 2015-02-17 11:29:36 -0800 | [diff] [blame] | 1 | /* |
| 2 | * cblas_ctbmv.c |
| 3 | * The program is a C interface to ctbmv. |
| 4 | * |
| 5 | * Keita Teranishi 5/20/98 |
| 6 | * |
| 7 | */ |
| 8 | #include "cblas.h" |
| 9 | #include "cblas_f77.h" |
| 10 | void cblas_ctbmv(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 int K, const void *A, const int lda, |
| 13 | void *X, const int incX) |
| 14 | { |
| 15 | char TA; |
| 16 | char UL; |
| 17 | char DI; |
| 18 | #ifdef F77_CHAR |
| 19 | F77_CHAR F77_TA, F77_UL, F77_DI; |
| 20 | #else |
| 21 | #define F77_TA &TA |
| 22 | #define F77_UL &UL |
| 23 | #define F77_DI &DI |
| 24 | #endif |
| 25 | #ifdef F77_INT |
| 26 | F77_INT F77_N=N, F77_lda=lda, F77_K=K, F77_incX=incX; |
| 27 | #else |
| 28 | #define F77_N N |
| 29 | #define F77_K K |
| 30 | #define F77_lda lda |
| 31 | #define F77_incX incX |
| 32 | #endif |
| 33 | int n, i=0, tincX; |
| 34 | float *st=0, *x=(float *)X; |
| 35 | extern int CBLAS_CallFromC; |
| 36 | extern int RowMajorStrg; |
| 37 | RowMajorStrg = 0; |
| 38 | |
| 39 | CBLAS_CallFromC = 1; |
| 40 | if (order == CblasColMajor) |
| 41 | { |
| 42 | if (Uplo == CblasUpper) UL = 'U'; |
| 43 | else if (Uplo == CblasLower) UL = 'L'; |
| 44 | else |
| 45 | { |
| 46 | cblas_xerbla(2, "cblas_ctbmv","Illegal Uplo setting, %d\n", Uplo); |
| 47 | CBLAS_CallFromC = 0; |
| 48 | RowMajorStrg = 0; |
| 49 | return; |
| 50 | } |
| 51 | if (TransA == CblasNoTrans) TA = 'N'; |
| 52 | else if (TransA == CblasTrans) TA = 'T'; |
| 53 | else if (TransA == CblasConjTrans) TA = 'C'; |
| 54 | else |
| 55 | { |
| 56 | cblas_xerbla(3, "cblas_ctbmv","Illegal TransA setting, %d\n", TransA); |
| 57 | CBLAS_CallFromC = 0; |
| 58 | RowMajorStrg = 0; |
| 59 | return; |
| 60 | } |
| 61 | if (Diag == CblasUnit) DI = 'U'; |
| 62 | else if (Diag == CblasNonUnit) DI = 'N'; |
| 63 | else |
| 64 | { |
| 65 | cblas_xerbla(4, "cblas_ctbmv","Illegal Diag setting, %d\n", Diag); |
| 66 | CBLAS_CallFromC = 0; |
| 67 | RowMajorStrg = 0; |
| 68 | return; |
| 69 | } |
| 70 | #ifdef F77_CHAR |
| 71 | F77_UL = C2F_CHAR(&UL); |
| 72 | F77_TA = C2F_CHAR(&TA); |
| 73 | F77_DI = C2F_CHAR(&DI); |
| 74 | #endif |
| 75 | F77_ctbmv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X, |
| 76 | &F77_incX); |
| 77 | } |
| 78 | else if (order == CblasRowMajor) |
| 79 | { |
| 80 | RowMajorStrg = 1; |
| 81 | if (Uplo == CblasUpper) UL = 'L'; |
| 82 | else if (Uplo == CblasLower) UL = 'U'; |
| 83 | else |
| 84 | { |
| 85 | cblas_xerbla(2, "cblas_ctbmv","Illegal Uplo setting, %d\n", Uplo); |
| 86 | CBLAS_CallFromC = 0; |
| 87 | RowMajorStrg = 0; |
| 88 | return; |
| 89 | } |
| 90 | |
| 91 | if (TransA == CblasNoTrans) TA = 'T'; |
| 92 | else if (TransA == CblasTrans) TA = 'N'; |
| 93 | else if (TransA == CblasConjTrans) |
| 94 | { |
| 95 | TA = 'N'; |
| 96 | if ( N > 0) |
| 97 | { |
| 98 | if(incX > 0) |
| 99 | tincX = incX; |
| 100 | else |
| 101 | tincX = -incX; |
| 102 | i = tincX << 1; |
| 103 | n = i * N; |
| 104 | x++; |
| 105 | st = x + n; |
| 106 | do |
| 107 | { |
| 108 | *x = -(*x); |
| 109 | x+= i; |
| 110 | } |
| 111 | while (x != st); |
| 112 | x -= n; |
| 113 | } |
| 114 | } |
| 115 | else |
| 116 | { |
| 117 | cblas_xerbla(3, "cblas_ctbmv","Illegal TransA setting, %d\n", TransA); |
| 118 | CBLAS_CallFromC = 0; |
| 119 | RowMajorStrg = 0; |
| 120 | return; |
| 121 | } |
| 122 | |
| 123 | if (Diag == CblasUnit) DI = 'U'; |
| 124 | else if (Diag == CblasNonUnit) DI = 'N'; |
| 125 | else |
| 126 | { |
| 127 | cblas_xerbla(4, "cblas_ctbmv","Illegal Uplo setting, %d\n", Uplo); |
| 128 | CBLAS_CallFromC = 0; |
| 129 | RowMajorStrg = 0; |
| 130 | return; |
| 131 | } |
| 132 | #ifdef F77_CHAR |
| 133 | F77_UL = C2F_CHAR(&UL); |
| 134 | F77_TA = C2F_CHAR(&TA); |
| 135 | F77_DI = C2F_CHAR(&DI); |
| 136 | #endif |
| 137 | |
| 138 | F77_ctbmv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X, |
| 139 | &F77_incX); |
| 140 | |
| 141 | if (TransA == CblasConjTrans) |
| 142 | { |
| 143 | if (N > 0) |
| 144 | { |
| 145 | do |
| 146 | { |
| 147 | *x = -(*x); |
| 148 | x += i; |
| 149 | } |
| 150 | while (x != st); |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | else cblas_xerbla(1, "cblas_ctbmv", "Illegal Order setting, %d\n", order); |
| 155 | CBLAS_CallFromC = 0; |
| 156 | RowMajorStrg = 0; |
| 157 | return; |
| 158 | } |