#ifdef __cplusplus extern "C" { #endif #include "lmp_f2c.h" int dorml2_(char *side, char *trans, integer *m, integer *n, integer *k, doublereal *a, integer *lda, doublereal *tau, doublereal *c__, integer *ldc, doublereal *work, integer *info, ftnlen side_len, ftnlen trans_len) { integer a_dim1, a_offset, c_dim1, c_offset, i__1, i__2; integer i__, i1, i2, i3, ic, jc, mi, ni, nq; doublereal aii; logical left; extern int dlarf_(char *, integer *, integer *, doublereal *, integer *, doublereal *, doublereal *, integer *, doublereal *, ftnlen); extern logical lsame_(char *, char *, ftnlen, ftnlen); extern int xerbla_(char *, integer *, ftnlen); logical notran; a_dim1 = *lda; a_offset = 1 + a_dim1; a -= a_offset; --tau; c_dim1 = *ldc; c_offset = 1 + c_dim1; c__ -= c_offset; --work; *info = 0; left = lsame_(side, (char *)"L", (ftnlen)1, (ftnlen)1); notran = lsame_(trans, (char *)"N", (ftnlen)1, (ftnlen)1); if (left) { nq = *m; } else { nq = *n; } if (!left && !lsame_(side, (char *)"R", (ftnlen)1, (ftnlen)1)) { *info = -1; } else if (!notran && !lsame_(trans, (char *)"T", (ftnlen)1, (ftnlen)1)) { *info = -2; } else if (*m < 0) { *info = -3; } else if (*n < 0) { *info = -4; } else if (*k < 0 || *k > nq) { *info = -5; } else if (*lda < max(1, *k)) { *info = -7; } else if (*ldc < max(1, *m)) { *info = -10; } if (*info != 0) { i__1 = -(*info); xerbla_((char *)"DORML2", &i__1, (ftnlen)6); return 0; } if (*m == 0 || *n == 0 || *k == 0) { return 0; } if (left && notran || !left && !notran) { i1 = 1; i2 = *k; i3 = 1; } else { i1 = *k; i2 = 1; i3 = -1; } if (left) { ni = *n; jc = 1; } else { mi = *m; ic = 1; } i__1 = i2; i__2 = i3; for (i__ = i1; i__2 < 0 ? i__ >= i__1 : i__ <= i__1; i__ += i__2) { if (left) { mi = *m - i__ + 1; ic = i__; } else { ni = *n - i__ + 1; jc = i__; } aii = a[i__ + i__ * a_dim1]; a[i__ + i__ * a_dim1] = 1.; dlarf_(side, &mi, &ni, &a[i__ + i__ * a_dim1], lda, &tau[i__], &c__[ic + jc * c_dim1], ldc, &work[1], (ftnlen)1); a[i__ + i__ * a_dim1] = aii; } return 0; } #ifdef __cplusplus } #endif