| Revision: | 1.1 |
| Committed: | Sun Apr 28 07:46:58 2013 UTC (10 years, 4 months ago) by tplarson |
| Content type: | text/plain |
| Branch: | MAIN |
| CVS Tags: | globalhs_version_5, Ver_8-7, Ver_8-5, globalhs_version_23, globalhs_version_22, globalhs_version_21, globalhs_version_20, Ver_LATEST, globalhs_version_24, Ver_8-3, globalhs_version_8, globalhs_version_9, globalhs_version_0, globalhs_version_1, globalhs_version_2, globalhs_version_3, globalhs_version_4, Ver_9-41, globalhs_version_6, globalhs_version_7, Ver_9-5, Ver_8-8, globalhs_version_19, Ver_8-2, Ver_8-10, Ver_8-1, Ver_8-6, Ver_9-1, Ver_8-4, Ver_9-2, globalhs_version_12, globalhs_version_13, globalhs_version_10, globalhs_version_11, globalhs_version_16, globalhs_version_17, globalhs_version_14, globalhs_version_15, globalhs_version_18, Ver_9-4, Ver_9-3, Ver_8-11, Ver_8-12, Ver_9-0, HEAD |
| Log Message: | functions needed for detrending and gapfilling |
| # | Content |
|---|---|
| 1 | // $Header: $ |
| 2 | |
| 3 | #include "ctypes_def.h" |
| 4 | #include "cblas.h" |
| 5 | |
| 6 | #if TYPE == FLOAT |
| 7 | #define LEVINSON slevinson |
| 8 | #elif TYPE == DOUBLE |
| 9 | #define LEVINSON dlevinson |
| 10 | #elif TYPE == COMPLEXFLOAT |
| 11 | #define LEVINSON clevinson |
| 12 | #elif TYPE == COMPLEXDOUBLE |
| 13 | #define LEVINSON zlevinson |
| 14 | #endif |
| 15 | |
| 16 | #ifdef NOBLAS |
| 17 | void LEVINSON( int n, CTYPE *r, CTYPE *b, CTYPE *x) |
| 18 | { |
| 19 | int k,i; |
| 20 | CTYPE alpha, mu; |
| 21 | CTYPE *b_tmp; |
| 22 | RTYPE beta; |
| 23 | |
| 24 | if (cimag(r[0]) != RZERO || creal(r[0]) <= RZERO ) |
| 25 | { |
| 26 | fprintf(stderr, "%s: Toeplitz matrix must be Hermitian.\n",__func__); |
| 27 | fprintf(stderr, "imag = %f, real = %f\n",cimag(r[0]),creal(r[0])); |
| 28 | abort(); |
| 29 | } |
| 30 | b_tmp = (CTYPE *)malloc(n*sizeof(CTYPE)); |
| 31 | beta = creal(r[0]); |
| 32 | x[0] = b[0] / r[0]; |
| 33 | b[0] = -r[1]/beta; |
| 34 | alpha = b[0]; |
| 35 | for (k=1; k<=n-1; k++) |
| 36 | { |
| 37 | beta = (RONE - CONJ(alpha)*alpha)*beta; |
| 38 | mu = b[k]; |
| 39 | for (i=2; i<=(k+1); i++) |
| 40 | mu -= conj(r[i-1])*x[k+1-i]; |
| 41 | mu /= beta; |
| 42 | for (i=1; i<=k; i++) |
| 43 | x[i-1] += mu*b[k-i]; |
| 44 | x[k] = mu; |
| 45 | |
| 46 | if (k<n-1) |
| 47 | { |
| 48 | alpha = -r[k+1]; |
| 49 | for (i=2; i<=(k+1); i++) |
| 50 | alpha -= r[i-1] * b[k+1-i]; |
| 51 | alpha /= beta; |
| 52 | memcpy(b_tmp, b, k*sizeof(CTYPE)); |
| 53 | for (i=1; i<=k; i++) |
| 54 | b[i-1] += alpha * CONJ(b_tmp[k-i]); |
| 55 | b[k] = alpha; |
| 56 | } |
| 57 | } |
| 58 | free(b_tmp); |
| 59 | } |
| 60 | |
| 61 | #else |
| 62 | |
| 63 | void LEVINSON( int n, CTYPE *r, CTYPE *b, CTYPE *x) |
| 64 | { |
| 65 | int k,i; |
| 66 | CTYPE alpha, mu; |
| 67 | CTYPE *b_tmp; |
| 68 | RTYPE beta; |
| 69 | |
| 70 | if (cimag(r[0]) != RZERO || creal(r[0]) <= RZERO ) |
| 71 | { |
| 72 | fprintf(stderr, "%s: Toeplitz matrix must be Hermitian.\n",__func__); |
| 73 | fprintf(stderr, "imag = %f, real = %f\n",cimag(r[0]),creal(r[0])); |
| 74 | abort(); |
| 75 | } |
| 76 | b_tmp = (CTYPE *)malloc(n*sizeof(CTYPE)); |
| 77 | beta = creal(r[0]); |
| 78 | x[0] = b[0] / r[0]; |
| 79 | b[0] = -r[1]/beta; |
| 80 | alpha = b[0]; |
| 81 | for (k=1; k<=n-1; k++) |
| 82 | { |
| 83 | beta = (RONE - CONJ(alpha)*alpha)*beta; |
| 84 | mu = b[k] - DOTC(k,&r[1],1,x,-1); |
| 85 | mu /= beta; |
| 86 | |
| 87 | AXPY(k,mu,b,-1,x,1); |
| 88 | x[k] = mu; |
| 89 | |
| 90 | if (k<n-1) |
| 91 | { |
| 92 | alpha = -r[k+1] - DOTU(k,&r[1],1,b,-1); |
| 93 | alpha /= beta; |
| 94 | for (i=0; i<k; i++) |
| 95 | b_tmp[i] = CONJ(b[i]); |
| 96 | AXPY(k,alpha,b_tmp,-1,b,1); |
| 97 | b[k] = alpha; |
| 98 | } |
| 99 | } |
| 100 | free(b_tmp); |
| 101 | } |
| 102 | |
| 103 | #endif |
| 104 | #undef LEVINSON |
| 105 | #undef AXPY |
| 106 | #undef DOTU |
| 107 | #undef DOTC |
| 108 | #include "ctypes_undef.h" |