| Tim Murray | 81253e9 | 2015-02-17 11:29:36 -0800 | [diff] [blame] | 1 | /* |
| 2 | * cblas_chpr.c |
| 3 | * The program is a C interface to chpr. |
| 4 | * |
| 5 | * Keita Teranishi 3/23/98 |
| 6 | * |
| 7 | */ |
| 8 | #include <stdio.h> |
| 9 | #include <stdlib.h> |
| 10 | #include "cblas.h" |
| 11 | #include "cblas_f77.h" |
| 12 | void cblas_chpr(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo, |
| 13 | const int N, const float alpha, const void *X, |
| 14 | const int incX, void *A) |
| 15 | { |
| 16 | char UL; |
| 17 | #ifdef F77_CHAR |
| 18 | F77_CHAR F77_UL; |
| 19 | #else |
| 20 | #define F77_UL &UL |
| 21 | #endif |
| 22 | |
| 23 | #ifdef F77_INT |
| 24 | F77_INT F77_N=N, F77_incX=incX; |
| 25 | #else |
| 26 | #define F77_N N |
| 27 | #define F77_incX incx |
| 28 | #endif |
| 29 | int n, i, tincx, incx=incX; |
| 30 | float *x=(float *)X, *xx=(float *)X, *tx, *st; |
| 31 | |
| 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 == CblasLower) UL = 'L'; |
| 40 | else if (Uplo == CblasUpper) UL = 'U'; |
| 41 | else |
| 42 | { |
| 43 | cblas_xerbla(2, "cblas_chpr","Illegal Uplo setting, %d\n",Uplo ); |
| 44 | CBLAS_CallFromC = 0; |
| 45 | RowMajorStrg = 0; |
| 46 | return; |
| 47 | } |
| 48 | #ifdef F77_CHAR |
| 49 | F77_UL = C2F_CHAR(&UL); |
| 50 | #endif |
| 51 | |
| 52 | F77_chpr(F77_UL, &F77_N, &alpha, X, &F77_incX, A); |
| 53 | |
| 54 | } else if (order == CblasRowMajor) |
| 55 | { |
| 56 | RowMajorStrg = 1; |
| 57 | if (Uplo == CblasUpper) UL = 'L'; |
| 58 | else if (Uplo == CblasLower) UL = 'U'; |
| 59 | else |
| 60 | { |
| 61 | cblas_xerbla(2, "cblas_chpr","Illegal Uplo setting, %d\n", Uplo); |
| 62 | CBLAS_CallFromC = 0; |
| 63 | RowMajorStrg = 0; |
| 64 | return; |
| 65 | } |
| 66 | #ifdef F77_CHAR |
| 67 | F77_UL = C2F_CHAR(&UL); |
| 68 | #endif |
| 69 | if (N > 0) |
| 70 | { |
| 71 | n = N << 1; |
| 72 | x = malloc(n*sizeof(float)); |
| 73 | tx = x; |
| 74 | if( incX > 0 ) { |
| 75 | i = incX << 1; |
| 76 | tincx = 2; |
| 77 | st= x+n; |
| 78 | } else { |
| 79 | i = incX *(-2); |
| 80 | tincx = -2; |
| 81 | st = x-2; |
| 82 | x +=(n-2); |
| 83 | } |
| 84 | do |
| 85 | { |
| 86 | *x = *xx; |
| 87 | x[1] = -xx[1]; |
| 88 | x += tincx ; |
| 89 | xx += i; |
| 90 | } |
| 91 | while (x != st); |
| 92 | x=tx; |
| 93 | #ifdef F77_INT |
| 94 | F77_incX = 1; |
| 95 | #else |
| 96 | incx = 1; |
| 97 | #endif |
| 98 | } |
| 99 | else x = (float *) X; |
| 100 | |
| 101 | F77_chpr(F77_UL, &F77_N, &alpha, x, &F77_incX, A); |
| 102 | |
| 103 | } else |
| 104 | { |
| 105 | cblas_xerbla(1, "cblas_chpr","Illegal Order setting, %d\n", order); |
| 106 | CBLAS_CallFromC = 0; |
| 107 | RowMajorStrg = 0; |
| 108 | return; |
| 109 | } |
| 110 | if(X!=x) |
| 111 | free(x); |
| 112 | CBLAS_CallFromC = 0; |
| 113 | RowMajorStrg = 0; |
| 114 | return; |
| 115 | } |