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cunml2.c 19 kB

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  1. /* f2c.h -- Standard Fortran to C header file */
  2. /** barf [ba:rf] 2. "He suggested using FORTRAN, and everybody barfed."
  3. - From The Shogakukan DICTIONARY OF NEW ENGLISH (Second edition) */
  4. #ifndef F2C_INCLUDE
  5. #define F2C_INCLUDE
  6. #include <math.h>
  7. #include <stdlib.h>
  8. #include <string.h>
  9. #include <stdio.h>
  10. #include <complex.h>
  11. #ifdef complex
  12. #undef complex
  13. #endif
  14. #ifdef I
  15. #undef I
  16. #endif
  17. typedef int integer;
  18. typedef unsigned int uinteger;
  19. typedef char *address;
  20. typedef short int shortint;
  21. typedef float real;
  22. typedef double doublereal;
  23. typedef struct { real r, i; } complex;
  24. typedef struct { doublereal r, i; } doublecomplex;
  25. static inline _Complex float Cf(complex *z) {return z->r + z->i*_Complex_I;}
  26. static inline _Complex double Cd(doublecomplex *z) {return z->r + z->i*_Complex_I;}
  27. static inline _Complex float * _pCf(complex *z) {return (_Complex float*)z;}
  28. static inline _Complex double * _pCd(doublecomplex *z) {return (_Complex double*)z;}
  29. #define pCf(z) (*_pCf(z))
  30. #define pCd(z) (*_pCd(z))
  31. typedef int logical;
  32. typedef short int shortlogical;
  33. typedef char logical1;
  34. typedef char integer1;
  35. #define TRUE_ (1)
  36. #define FALSE_ (0)
  37. /* Extern is for use with -E */
  38. #ifndef Extern
  39. #define Extern extern
  40. #endif
  41. /* I/O stuff */
  42. typedef int flag;
  43. typedef int ftnlen;
  44. typedef int ftnint;
  45. /*external read, write*/
  46. typedef struct
  47. { flag cierr;
  48. ftnint ciunit;
  49. flag ciend;
  50. char *cifmt;
  51. ftnint cirec;
  52. } cilist;
  53. /*internal read, write*/
  54. typedef struct
  55. { flag icierr;
  56. char *iciunit;
  57. flag iciend;
  58. char *icifmt;
  59. ftnint icirlen;
  60. ftnint icirnum;
  61. } icilist;
  62. /*open*/
  63. typedef struct
  64. { flag oerr;
  65. ftnint ounit;
  66. char *ofnm;
  67. ftnlen ofnmlen;
  68. char *osta;
  69. char *oacc;
  70. char *ofm;
  71. ftnint orl;
  72. char *oblnk;
  73. } olist;
  74. /*close*/
  75. typedef struct
  76. { flag cerr;
  77. ftnint cunit;
  78. char *csta;
  79. } cllist;
  80. /*rewind, backspace, endfile*/
  81. typedef struct
  82. { flag aerr;
  83. ftnint aunit;
  84. } alist;
  85. /* inquire */
  86. typedef struct
  87. { flag inerr;
  88. ftnint inunit;
  89. char *infile;
  90. ftnlen infilen;
  91. ftnint *inex; /*parameters in standard's order*/
  92. ftnint *inopen;
  93. ftnint *innum;
  94. ftnint *innamed;
  95. char *inname;
  96. ftnlen innamlen;
  97. char *inacc;
  98. ftnlen inacclen;
  99. char *inseq;
  100. ftnlen inseqlen;
  101. char *indir;
  102. ftnlen indirlen;
  103. char *infmt;
  104. ftnlen infmtlen;
  105. char *inform;
  106. ftnint informlen;
  107. char *inunf;
  108. ftnlen inunflen;
  109. ftnint *inrecl;
  110. ftnint *innrec;
  111. char *inblank;
  112. ftnlen inblanklen;
  113. } inlist;
  114. #define VOID void
  115. union Multitype { /* for multiple entry points */
  116. integer1 g;
  117. shortint h;
  118. integer i;
  119. /* longint j; */
  120. real r;
  121. doublereal d;
  122. complex c;
  123. doublecomplex z;
  124. };
  125. typedef union Multitype Multitype;
  126. struct Vardesc { /* for Namelist */
  127. char *name;
  128. char *addr;
  129. ftnlen *dims;
  130. int type;
  131. };
  132. typedef struct Vardesc Vardesc;
  133. struct Namelist {
  134. char *name;
  135. Vardesc **vars;
  136. int nvars;
  137. };
  138. typedef struct Namelist Namelist;
  139. #define abs(x) ((x) >= 0 ? (x) : -(x))
  140. #define dabs(x) (fabs(x))
  141. #define f2cmin(a,b) ((a) <= (b) ? (a) : (b))
  142. #define f2cmax(a,b) ((a) >= (b) ? (a) : (b))
  143. #define dmin(a,b) (f2cmin(a,b))
  144. #define dmax(a,b) (f2cmax(a,b))
  145. #define bit_test(a,b) ((a) >> (b) & 1)
  146. #define bit_clear(a,b) ((a) & ~((uinteger)1 << (b)))
  147. #define bit_set(a,b) ((a) | ((uinteger)1 << (b)))
  148. #define abort_() { sig_die("Fortran abort routine called", 1); }
  149. #define c_abs(z) (cabsf(Cf(z)))
  150. #define c_cos(R,Z) { pCf(R)=ccos(Cf(Z)); }
  151. #define c_div(c, a, b) {pCf(c) = Cf(a)/Cf(b);}
  152. #define z_div(c, a, b) {pCd(c) = Cd(a)/Cd(b);}
  153. #define c_exp(R, Z) {pCf(R) = cexpf(Cf(Z));}
  154. #define c_log(R, Z) {pCf(R) = clogf(Cf(Z));}
  155. #define c_sin(R, Z) {pCf(R) = csinf(Cf(Z));}
  156. //#define c_sqrt(R, Z) {*(R) = csqrtf(Cf(Z));}
  157. #define c_sqrt(R, Z) {pCf(R) = csqrtf(Cf(Z));}
  158. #define d_abs(x) (fabs(*(x)))
  159. #define d_acos(x) (acos(*(x)))
  160. #define d_asin(x) (asin(*(x)))
  161. #define d_atan(x) (atan(*(x)))
  162. #define d_atn2(x, y) (atan2(*(x),*(y)))
  163. #define d_cnjg(R, Z) { pCd(R) = conj(Cd(Z)); }
  164. #define r_cnjg(R, Z) { pCf(R) = conj(Cf(Z)); }
  165. #define d_cos(x) (cos(*(x)))
  166. #define d_cosh(x) (cosh(*(x)))
  167. #define d_dim(__a, __b) ( *(__a) > *(__b) ? *(__a) - *(__b) : 0.0 )
  168. #define d_exp(x) (exp(*(x)))
  169. #define d_imag(z) (cimag(Cd(z)))
  170. #define r_imag(z) (cimag(Cf(z)))
  171. #define d_int(__x) (*(__x)>0 ? floor(*(__x)) : -floor(- *(__x)))
  172. #define r_int(__x) (*(__x)>0 ? floor(*(__x)) : -floor(- *(__x)))
  173. #define d_lg10(x) ( 0.43429448190325182765 * log(*(x)) )
  174. #define r_lg10(x) ( 0.43429448190325182765 * log(*(x)) )
  175. #define d_log(x) (log(*(x)))
  176. #define d_mod(x, y) (fmod(*(x), *(y)))
  177. #define u_nint(__x) ((__x)>=0 ? floor((__x) + .5) : -floor(.5 - (__x)))
  178. #define d_nint(x) u_nint(*(x))
  179. #define u_sign(__a,__b) ((__b) >= 0 ? ((__a) >= 0 ? (__a) : -(__a)) : -((__a) >= 0 ? (__a) : -(__a)))
  180. #define d_sign(a,b) u_sign(*(a),*(b))
  181. #define r_sign(a,b) u_sign(*(a),*(b))
  182. #define d_sin(x) (sin(*(x)))
  183. #define d_sinh(x) (sinh(*(x)))
  184. #define d_sqrt(x) (sqrt(*(x)))
  185. #define d_tan(x) (tan(*(x)))
  186. #define d_tanh(x) (tanh(*(x)))
  187. #define i_abs(x) abs(*(x))
  188. #define i_dnnt(x) ((integer)u_nint(*(x)))
  189. #define i_len(s, n) (n)
  190. #define i_nint(x) ((integer)u_nint(*(x)))
  191. #define i_sign(a,b) ((integer)u_sign((integer)*(a),(integer)*(b)))
  192. #define pow_dd(ap, bp) ( pow(*(ap), *(bp)))
  193. #define pow_si(B,E) spow_ui(*(B),*(E))
  194. #define pow_ri(B,E) spow_ui(*(B),*(E))
  195. #define pow_di(B,E) dpow_ui(*(B),*(E))
  196. #define pow_zi(p, a, b) {pCd(p) = zpow_ui(Cd(a), *(b));}
  197. #define pow_ci(p, a, b) {pCf(p) = cpow_ui(Cf(a), *(b));}
  198. #define pow_zz(R,A,B) {pCd(R) = cpow(Cd(A),*(B));}
  199. #define s_cat(lpp, rpp, rnp, np, llp) { ftnlen i, nc, ll; char *f__rp, *lp; ll = (llp); lp = (lpp); for(i=0; i < (int)*(np); ++i) { nc = ll; if((rnp)[i] < nc) nc = (rnp)[i]; ll -= nc; f__rp = (rpp)[i]; while(--nc >= 0) *lp++ = *(f__rp)++; } while(--ll >= 0) *lp++ = ' '; }
  200. #define s_cmp(a,b,c,d) ((integer)strncmp((a),(b),f2cmin((c),(d))))
  201. #define s_copy(A,B,C,D) { int __i,__m; for (__i=0, __m=f2cmin((C),(D)); __i<__m && (B)[__i] != 0; ++__i) (A)[__i] = (B)[__i]; }
  202. #define sig_die(s, kill) { exit(1); }
  203. #define s_stop(s, n) {exit(0);}
  204. static char junk[] = "\n@(#)LIBF77 VERSION 19990503\n";
  205. #define z_abs(z) (cabs(Cd(z)))
  206. #define z_exp(R, Z) {pCd(R) = cexp(Cd(Z));}
  207. #define z_sqrt(R, Z) {pCd(R) = csqrt(Cd(Z));}
  208. #define myexit_() break;
  209. #define mycycle() continue;
  210. #define myceiling(w) {ceil(w)}
  211. #define myhuge(w) {HUGE_VAL}
  212. //#define mymaxloc_(w,s,e,n) {if (sizeof(*(w)) == sizeof(double)) dmaxloc_((w),*(s),*(e),n); else dmaxloc_((w),*(s),*(e),n);}
  213. #define mymaxloc(w,s,e,n) {dmaxloc_(w,*(s),*(e),n)}
  214. /* procedure parameter types for -A and -C++ */
  215. #define F2C_proc_par_types 1
  216. #ifdef __cplusplus
  217. typedef logical (*L_fp)(...);
  218. #else
  219. typedef logical (*L_fp)();
  220. #endif
  221. static float spow_ui(float x, integer n) {
  222. float pow=1.0; unsigned long int u;
  223. if(n != 0) {
  224. if(n < 0) n = -n, x = 1/x;
  225. for(u = n; ; ) {
  226. if(u & 01) pow *= x;
  227. if(u >>= 1) x *= x;
  228. else break;
  229. }
  230. }
  231. return pow;
  232. }
  233. static double dpow_ui(double x, integer n) {
  234. double pow=1.0; unsigned long int u;
  235. if(n != 0) {
  236. if(n < 0) n = -n, x = 1/x;
  237. for(u = n; ; ) {
  238. if(u & 01) pow *= x;
  239. if(u >>= 1) x *= x;
  240. else break;
  241. }
  242. }
  243. return pow;
  244. }
  245. static _Complex float cpow_ui(_Complex float x, integer n) {
  246. _Complex float pow=1.0; unsigned long int u;
  247. if(n != 0) {
  248. if(n < 0) n = -n, x = 1/x;
  249. for(u = n; ; ) {
  250. if(u & 01) pow *= x;
  251. if(u >>= 1) x *= x;
  252. else break;
  253. }
  254. }
  255. return pow;
  256. }
  257. static _Complex double zpow_ui(_Complex double x, integer n) {
  258. _Complex double pow=1.0; unsigned long int u;
  259. if(n != 0) {
  260. if(n < 0) n = -n, x = 1/x;
  261. for(u = n; ; ) {
  262. if(u & 01) pow *= x;
  263. if(u >>= 1) x *= x;
  264. else break;
  265. }
  266. }
  267. return pow;
  268. }
  269. static integer pow_ii(integer x, integer n) {
  270. integer pow; unsigned long int u;
  271. if (n <= 0) {
  272. if (n == 0 || x == 1) pow = 1;
  273. else if (x != -1) pow = x == 0 ? 1/x : 0;
  274. else n = -n;
  275. }
  276. if ((n > 0) || !(n == 0 || x == 1 || x != -1)) {
  277. u = n;
  278. for(pow = 1; ; ) {
  279. if(u & 01) pow *= x;
  280. if(u >>= 1) x *= x;
  281. else break;
  282. }
  283. }
  284. return pow;
  285. }
  286. static integer dmaxloc_(double *w, integer s, integer e, integer *n)
  287. {
  288. double m; integer i, mi;
  289. for(m=w[s-1], mi=s, i=s+1; i<=e; i++)
  290. if (w[i-1]>m) mi=i ,m=w[i-1];
  291. return mi-s+1;
  292. }
  293. static integer smaxloc_(float *w, integer s, integer e, integer *n)
  294. {
  295. float m; integer i, mi;
  296. for(m=w[s-1], mi=s, i=s+1; i<=e; i++)
  297. if (w[i-1]>m) mi=i ,m=w[i-1];
  298. return mi-s+1;
  299. }
  300. static inline void cdotc_(complex *z, integer *n_, complex *x, integer *incx_, complex *y, integer *incy_) {
  301. integer n = *n_, incx = *incx_, incy = *incy_, i;
  302. _Complex float zdotc = 0.0;
  303. if (incx == 1 && incy == 1) {
  304. for (i=0;i<n;i++) { /* zdotc = zdotc + dconjg(x(i))* y(i) */
  305. zdotc += conjf(Cf(&x[i])) * Cf(&y[i]);
  306. }
  307. } else {
  308. for (i=0;i<n;i++) { /* zdotc = zdotc + dconjg(x(i))* y(i) */
  309. zdotc += conjf(Cf(&x[i*incx])) * Cf(&y[i*incy]);
  310. }
  311. }
  312. pCf(z) = zdotc;
  313. }
  314. static inline void zdotc_(doublecomplex *z, integer *n_, doublecomplex *x, integer *incx_, doublecomplex *y, integer *incy_) {
  315. integer n = *n_, incx = *incx_, incy = *incy_, i;
  316. _Complex double zdotc = 0.0;
  317. if (incx == 1 && incy == 1) {
  318. for (i=0;i<n;i++) { /* zdotc = zdotc + dconjg(x(i))* y(i) */
  319. zdotc += conj(Cd(&x[i])) * Cd(&y[i]);
  320. }
  321. } else {
  322. for (i=0;i<n;i++) { /* zdotc = zdotc + dconjg(x(i))* y(i) */
  323. zdotc += conj(Cd(&x[i*incx])) * Cd(&y[i*incy]);
  324. }
  325. }
  326. pCd(z) = zdotc;
  327. }
  328. static inline void cdotu_(complex *z, integer *n_, complex *x, integer *incx_, complex *y, integer *incy_) {
  329. integer n = *n_, incx = *incx_, incy = *incy_, i;
  330. _Complex float zdotc = 0.0;
  331. if (incx == 1 && incy == 1) {
  332. for (i=0;i<n;i++) { /* zdotc = zdotc + dconjg(x(i))* y(i) */
  333. zdotc += Cf(&x[i]) * Cf(&y[i]);
  334. }
  335. } else {
  336. for (i=0;i<n;i++) { /* zdotc = zdotc + dconjg(x(i))* y(i) */
  337. zdotc += Cf(&x[i*incx]) * Cf(&y[i*incy]);
  338. }
  339. }
  340. pCf(z) = zdotc;
  341. }
  342. static inline void zdotu_(doublecomplex *z, integer *n_, doublecomplex *x, integer *incx_, doublecomplex *y, integer *incy_) {
  343. integer n = *n_, incx = *incx_, incy = *incy_, i;
  344. _Complex double zdotc = 0.0;
  345. if (incx == 1 && incy == 1) {
  346. for (i=0;i<n;i++) { /* zdotc = zdotc + dconjg(x(i))* y(i) */
  347. zdotc += Cd(&x[i]) * Cd(&y[i]);
  348. }
  349. } else {
  350. for (i=0;i<n;i++) { /* zdotc = zdotc + dconjg(x(i))* y(i) */
  351. zdotc += Cd(&x[i*incx]) * Cd(&y[i*incy]);
  352. }
  353. }
  354. pCd(z) = zdotc;
  355. }
  356. #endif
  357. /* -- translated by f2c (version 20000121).
  358. You must link the resulting object file with the libraries:
  359. -lf2c -lm (in that order)
  360. */
  361. /* > \brief \b CUNML2 multiplies a general matrix by the unitary matrix from a LQ factorization determined by
  362. cgelqf (unblocked algorithm). */
  363. /* =========== DOCUMENTATION =========== */
  364. /* Online html documentation available at */
  365. /* http://www.netlib.org/lapack/explore-html/ */
  366. /* > \htmlonly */
  367. /* > Download CUNML2 + dependencies */
  368. /* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/cunml2.
  369. f"> */
  370. /* > [TGZ]</a> */
  371. /* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/cunml2.
  372. f"> */
  373. /* > [ZIP]</a> */
  374. /* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/cunml2.
  375. f"> */
  376. /* > [TXT]</a> */
  377. /* > \endhtmlonly */
  378. /* Definition: */
  379. /* =========== */
  380. /* SUBROUTINE CUNML2( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, */
  381. /* WORK, INFO ) */
  382. /* CHARACTER SIDE, TRANS */
  383. /* INTEGER INFO, K, LDA, LDC, M, N */
  384. /* COMPLEX A( LDA, * ), C( LDC, * ), TAU( * ), WORK( * ) */
  385. /* > \par Purpose: */
  386. /* ============= */
  387. /* > */
  388. /* > \verbatim */
  389. /* > */
  390. /* > CUNML2 overwrites the general complex m-by-n matrix C with */
  391. /* > */
  392. /* > Q * C if SIDE = 'L' and TRANS = 'N', or */
  393. /* > */
  394. /* > Q**H* C if SIDE = 'L' and TRANS = 'C', or */
  395. /* > */
  396. /* > C * Q if SIDE = 'R' and TRANS = 'N', or */
  397. /* > */
  398. /* > C * Q**H if SIDE = 'R' and TRANS = 'C', */
  399. /* > */
  400. /* > where Q is a complex unitary matrix defined as the product of k */
  401. /* > elementary reflectors */
  402. /* > */
  403. /* > Q = H(k)**H . . . H(2)**H H(1)**H */
  404. /* > */
  405. /* > as returned by CGELQF. Q is of order m if SIDE = 'L' and of order n */
  406. /* > if SIDE = 'R'. */
  407. /* > \endverbatim */
  408. /* Arguments: */
  409. /* ========== */
  410. /* > \param[in] SIDE */
  411. /* > \verbatim */
  412. /* > SIDE is CHARACTER*1 */
  413. /* > = 'L': apply Q or Q**H from the Left */
  414. /* > = 'R': apply Q or Q**H from the Right */
  415. /* > \endverbatim */
  416. /* > */
  417. /* > \param[in] TRANS */
  418. /* > \verbatim */
  419. /* > TRANS is CHARACTER*1 */
  420. /* > = 'N': apply Q (No transpose) */
  421. /* > = 'C': apply Q**H (Conjugate transpose) */
  422. /* > \endverbatim */
  423. /* > */
  424. /* > \param[in] M */
  425. /* > \verbatim */
  426. /* > M is INTEGER */
  427. /* > The number of rows of the matrix C. M >= 0. */
  428. /* > \endverbatim */
  429. /* > */
  430. /* > \param[in] N */
  431. /* > \verbatim */
  432. /* > N is INTEGER */
  433. /* > The number of columns of the matrix C. N >= 0. */
  434. /* > \endverbatim */
  435. /* > */
  436. /* > \param[in] K */
  437. /* > \verbatim */
  438. /* > K is INTEGER */
  439. /* > The number of elementary reflectors whose product defines */
  440. /* > the matrix Q. */
  441. /* > If SIDE = 'L', M >= K >= 0; */
  442. /* > if SIDE = 'R', N >= K >= 0. */
  443. /* > \endverbatim */
  444. /* > */
  445. /* > \param[in] A */
  446. /* > \verbatim */
  447. /* > A is COMPLEX array, dimension */
  448. /* > (LDA,M) if SIDE = 'L', */
  449. /* > (LDA,N) if SIDE = 'R' */
  450. /* > The i-th row must contain the vector which defines the */
  451. /* > elementary reflector H(i), for i = 1,2,...,k, as returned by */
  452. /* > CGELQF in the first k rows of its array argument A. */
  453. /* > A is modified by the routine but restored on exit. */
  454. /* > \endverbatim */
  455. /* > */
  456. /* > \param[in] LDA */
  457. /* > \verbatim */
  458. /* > LDA is INTEGER */
  459. /* > The leading dimension of the array A. LDA >= f2cmax(1,K). */
  460. /* > \endverbatim */
  461. /* > */
  462. /* > \param[in] TAU */
  463. /* > \verbatim */
  464. /* > TAU is COMPLEX array, dimension (K) */
  465. /* > TAU(i) must contain the scalar factor of the elementary */
  466. /* > reflector H(i), as returned by CGELQF. */
  467. /* > \endverbatim */
  468. /* > */
  469. /* > \param[in,out] C */
  470. /* > \verbatim */
  471. /* > C is COMPLEX array, dimension (LDC,N) */
  472. /* > On entry, the m-by-n matrix C. */
  473. /* > On exit, C is overwritten by Q*C or Q**H*C or C*Q**H or C*Q. */
  474. /* > \endverbatim */
  475. /* > */
  476. /* > \param[in] LDC */
  477. /* > \verbatim */
  478. /* > LDC is INTEGER */
  479. /* > The leading dimension of the array C. LDC >= f2cmax(1,M). */
  480. /* > \endverbatim */
  481. /* > */
  482. /* > \param[out] WORK */
  483. /* > \verbatim */
  484. /* > WORK is COMPLEX array, dimension */
  485. /* > (N) if SIDE = 'L', */
  486. /* > (M) if SIDE = 'R' */
  487. /* > \endverbatim */
  488. /* > */
  489. /* > \param[out] INFO */
  490. /* > \verbatim */
  491. /* > INFO is INTEGER */
  492. /* > = 0: successful exit */
  493. /* > < 0: if INFO = -i, the i-th argument had an illegal value */
  494. /* > \endverbatim */
  495. /* Authors: */
  496. /* ======== */
  497. /* > \author Univ. of Tennessee */
  498. /* > \author Univ. of California Berkeley */
  499. /* > \author Univ. of Colorado Denver */
  500. /* > \author NAG Ltd. */
  501. /* > \date December 2016 */
  502. /* > \ingroup complexOTHERcomputational */
  503. /* ===================================================================== */
  504. /* Subroutine */ int cunml2_(char *side, char *trans, integer *m, integer *n,
  505. integer *k, complex *a, integer *lda, complex *tau, complex *c__,
  506. integer *ldc, complex *work, integer *info)
  507. {
  508. /* System generated locals */
  509. integer a_dim1, a_offset, c_dim1, c_offset, i__1, i__2, i__3;
  510. complex q__1;
  511. /* Local variables */
  512. logical left;
  513. complex taui;
  514. integer i__;
  515. extern /* Subroutine */ int clarf_(char *, integer *, integer *, complex *
  516. , integer *, complex *, complex *, integer *, complex *);
  517. extern logical lsame_(char *, char *);
  518. integer i1, i2, i3, ic, jc, mi, ni, nq;
  519. extern /* Subroutine */ int clacgv_(integer *, complex *, integer *),
  520. xerbla_(char *, integer *, ftnlen);
  521. logical notran;
  522. complex aii;
  523. /* -- LAPACK computational routine (version 3.7.0) -- */
  524. /* -- LAPACK is a software package provided by Univ. of Tennessee, -- */
  525. /* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- */
  526. /* December 2016 */
  527. /* ===================================================================== */
  528. /* Test the input arguments */
  529. /* Parameter adjustments */
  530. a_dim1 = *lda;
  531. a_offset = 1 + a_dim1 * 1;
  532. a -= a_offset;
  533. --tau;
  534. c_dim1 = *ldc;
  535. c_offset = 1 + c_dim1 * 1;
  536. c__ -= c_offset;
  537. --work;
  538. /* Function Body */
  539. *info = 0;
  540. left = lsame_(side, "L");
  541. notran = lsame_(trans, "N");
  542. /* NQ is the order of Q */
  543. if (left) {
  544. nq = *m;
  545. } else {
  546. nq = *n;
  547. }
  548. if (! left && ! lsame_(side, "R")) {
  549. *info = -1;
  550. } else if (! notran && ! lsame_(trans, "C")) {
  551. *info = -2;
  552. } else if (*m < 0) {
  553. *info = -3;
  554. } else if (*n < 0) {
  555. *info = -4;
  556. } else if (*k < 0 || *k > nq) {
  557. *info = -5;
  558. } else if (*lda < f2cmax(1,*k)) {
  559. *info = -7;
  560. } else if (*ldc < f2cmax(1,*m)) {
  561. *info = -10;
  562. }
  563. if (*info != 0) {
  564. i__1 = -(*info);
  565. xerbla_("CUNML2", &i__1, (ftnlen)6);
  566. return 0;
  567. }
  568. /* Quick return if possible */
  569. if (*m == 0 || *n == 0 || *k == 0) {
  570. return 0;
  571. }
  572. if (left && notran || ! left && ! notran) {
  573. i1 = 1;
  574. i2 = *k;
  575. i3 = 1;
  576. } else {
  577. i1 = *k;
  578. i2 = 1;
  579. i3 = -1;
  580. }
  581. if (left) {
  582. ni = *n;
  583. jc = 1;
  584. } else {
  585. mi = *m;
  586. ic = 1;
  587. }
  588. i__1 = i2;
  589. i__2 = i3;
  590. for (i__ = i1; i__2 < 0 ? i__ >= i__1 : i__ <= i__1; i__ += i__2) {
  591. if (left) {
  592. /* H(i) or H(i)**H is applied to C(i:m,1:n) */
  593. mi = *m - i__ + 1;
  594. ic = i__;
  595. } else {
  596. /* H(i) or H(i)**H is applied to C(1:m,i:n) */
  597. ni = *n - i__ + 1;
  598. jc = i__;
  599. }
  600. /* Apply H(i) or H(i)**H */
  601. if (notran) {
  602. r_cnjg(&q__1, &tau[i__]);
  603. taui.r = q__1.r, taui.i = q__1.i;
  604. } else {
  605. i__3 = i__;
  606. taui.r = tau[i__3].r, taui.i = tau[i__3].i;
  607. }
  608. if (i__ < nq) {
  609. i__3 = nq - i__;
  610. clacgv_(&i__3, &a[i__ + (i__ + 1) * a_dim1], lda);
  611. }
  612. i__3 = i__ + i__ * a_dim1;
  613. aii.r = a[i__3].r, aii.i = a[i__3].i;
  614. i__3 = i__ + i__ * a_dim1;
  615. a[i__3].r = 1.f, a[i__3].i = 0.f;
  616. clarf_(side, &mi, &ni, &a[i__ + i__ * a_dim1], lda, &taui, &c__[ic +
  617. jc * c_dim1], ldc, &work[1]);
  618. i__3 = i__ + i__ * a_dim1;
  619. a[i__3].r = aii.r, a[i__3].i = aii.i;
  620. if (i__ < nq) {
  621. i__3 = nq - i__;
  622. clacgv_(&i__3, &a[i__ + (i__ + 1) * a_dim1], lda);
  623. }
  624. /* L10: */
  625. }
  626. return 0;
  627. /* End of CUNML2 */
  628. } /* cunml2_ */