#ifdef __cplusplus
extern "C" {
#endif
#include "lmp_f2c.h"
int zher2k_(char *uplo, char *trans, integer *n, integer *k, doublecomplex *alpha, doublecomplex *a,
            integer *lda, doublecomplex *b, integer *ldb, doublereal *beta, doublecomplex *c__,
            integer *ldc, ftnlen uplo_len, ftnlen trans_len)
{
    integer a_dim1, a_offset, b_dim1, b_offset, c_dim1, c_offset, i__1, i__2, i__3, i__4, i__5,
        i__6, i__7;
    doublereal d__1;
    doublecomplex z__1, z__2, z__3, z__4, z__5, z__6;
    void d_lmp_cnjg(doublecomplex *, doublecomplex *);
    integer i__, j, l, info;
    doublecomplex temp1, temp2;
    extern logical lsame_(char *, char *, ftnlen, ftnlen);
    integer nrowa;
    logical upper;
    extern int xerbla_(char *, integer *, ftnlen);
    a_dim1 = *lda;
    a_offset = 1 + a_dim1;
    a -= a_offset;
    b_dim1 = *ldb;
    b_offset = 1 + b_dim1;
    b -= b_offset;
    c_dim1 = *ldc;
    c_offset = 1 + c_dim1;
    c__ -= c_offset;
    if (lsame_(trans, (char *)"N", (ftnlen)1, (ftnlen)1)) {
        nrowa = *n;
    } else {
        nrowa = *k;
    }
    upper = lsame_(uplo, (char *)"U", (ftnlen)1, (ftnlen)1);
    info = 0;
    if (!upper && !lsame_(uplo, (char *)"L", (ftnlen)1, (ftnlen)1)) {
        info = 1;
    } else if (!lsame_(trans, (char *)"N", (ftnlen)1, (ftnlen)1) &&
               !lsame_(trans, (char *)"C", (ftnlen)1, (ftnlen)1)) {
        info = 2;
    } else if (*n < 0) {
        info = 3;
    } else if (*k < 0) {
        info = 4;
    } else if (*lda < max(1, nrowa)) {
        info = 7;
    } else if (*ldb < max(1, nrowa)) {
        info = 9;
    } else if (*ldc < max(1, *n)) {
        info = 12;
    }
    if (info != 0) {
        xerbla_((char *)"ZHER2K", &info, (ftnlen)6);
        return 0;
    }
    if (*n == 0 || (alpha->r == 0. && alpha->i == 0. || *k == 0) && *beta == 1.) {
        return 0;
    }
    if (alpha->r == 0. && alpha->i == 0.) {
        if (upper) {
            if (*beta == 0.) {
                i__1 = *n;
                for (j = 1; j <= i__1; ++j) {
                    i__2 = j;
                    for (i__ = 1; i__ <= i__2; ++i__) {
                        i__3 = i__ + j * c_dim1;
                        c__[i__3].r = 0., c__[i__3].i = 0.;
                    }
                }
            } else {
                i__1 = *n;
                for (j = 1; j <= i__1; ++j) {
                    i__2 = j - 1;
                    for (i__ = 1; i__ <= i__2; ++i__) {
                        i__3 = i__ + j * c_dim1;
                        i__4 = i__ + j * c_dim1;
                        z__1.r = *beta * c__[i__4].r, z__1.i = *beta * c__[i__4].i;
                        c__[i__3].r = z__1.r, c__[i__3].i = z__1.i;
                    }
                    i__2 = j + j * c_dim1;
                    i__3 = j + j * c_dim1;
                    d__1 = *beta * c__[i__3].r;
                    c__[i__2].r = d__1, c__[i__2].i = 0.;
                }
            }
        } else {
            if (*beta == 0.) {
                i__1 = *n;
                for (j = 1; j <= i__1; ++j) {
                    i__2 = *n;
                    for (i__ = j; i__ <= i__2; ++i__) {
                        i__3 = i__ + j * c_dim1;
                        c__[i__3].r = 0., c__[i__3].i = 0.;
                    }
                }
            } else {
                i__1 = *n;
                for (j = 1; j <= i__1; ++j) {
                    i__2 = j + j * c_dim1;
                    i__3 = j + j * c_dim1;
                    d__1 = *beta * c__[i__3].r;
                    c__[i__2].r = d__1, c__[i__2].i = 0.;
                    i__2 = *n;
                    for (i__ = j + 1; i__ <= i__2; ++i__) {
                        i__3 = i__ + j * c_dim1;
                        i__4 = i__ + j * c_dim1;
                        z__1.r = *beta * c__[i__4].r, z__1.i = *beta * c__[i__4].i;
                        c__[i__3].r = z__1.r, c__[i__3].i = z__1.i;
                    }
                }
            }
        }
        return 0;
    }
    if (lsame_(trans, (char *)"N", (ftnlen)1, (ftnlen)1)) {
        if (upper) {
            i__1 = *n;
            for (j = 1; j <= i__1; ++j) {
                if (*beta == 0.) {
                    i__2 = j;
                    for (i__ = 1; i__ <= i__2; ++i__) {
                        i__3 = i__ + j * c_dim1;
                        c__[i__3].r = 0., c__[i__3].i = 0.;
                    }
                } else if (*beta != 1.) {
                    i__2 = j - 1;
                    for (i__ = 1; i__ <= i__2; ++i__) {
                        i__3 = i__ + j * c_dim1;
                        i__4 = i__ + j * c_dim1;
                        z__1.r = *beta * c__[i__4].r, z__1.i = *beta * c__[i__4].i;
                        c__[i__3].r = z__1.r, c__[i__3].i = z__1.i;
                    }
                    i__2 = j + j * c_dim1;
                    i__3 = j + j * c_dim1;
                    d__1 = *beta * c__[i__3].r;
                    c__[i__2].r = d__1, c__[i__2].i = 0.;
                } else {
                    i__2 = j + j * c_dim1;
                    i__3 = j + j * c_dim1;
                    d__1 = c__[i__3].r;
                    c__[i__2].r = d__1, c__[i__2].i = 0.;
                }
                i__2 = *k;
                for (l = 1; l <= i__2; ++l) {
                    i__3 = j + l * a_dim1;
                    i__4 = j + l * b_dim1;
                    if (a[i__3].r != 0. || a[i__3].i != 0. ||
                        (b[i__4].r != 0. || b[i__4].i != 0.)) {
                        d_lmp_cnjg(&z__2, &b[j + l * b_dim1]);
                        z__1.r = alpha->r * z__2.r - alpha->i * z__2.i,
                        z__1.i = alpha->r * z__2.i + alpha->i * z__2.r;
                        temp1.r = z__1.r, temp1.i = z__1.i;
                        i__3 = j + l * a_dim1;
                        z__2.r = alpha->r * a[i__3].r - alpha->i * a[i__3].i,
                        z__2.i = alpha->r * a[i__3].i + alpha->i * a[i__3].r;
                        d_lmp_cnjg(&z__1, &z__2);
                        temp2.r = z__1.r, temp2.i = z__1.i;
                        i__3 = j - 1;
                        for (i__ = 1; i__ <= i__3; ++i__) {
                            i__4 = i__ + j * c_dim1;
                            i__5 = i__ + j * c_dim1;
                            i__6 = i__ + l * a_dim1;
                            z__3.r = a[i__6].r * temp1.r - a[i__6].i * temp1.i,
                            z__3.i = a[i__6].r * temp1.i + a[i__6].i * temp1.r;
                            z__2.r = c__[i__5].r + z__3.r, z__2.i = c__[i__5].i + z__3.i;
                            i__7 = i__ + l * b_dim1;
                            z__4.r = b[i__7].r * temp2.r - b[i__7].i * temp2.i,
                            z__4.i = b[i__7].r * temp2.i + b[i__7].i * temp2.r;
                            z__1.r = z__2.r + z__4.r, z__1.i = z__2.i + z__4.i;
                            c__[i__4].r = z__1.r, c__[i__4].i = z__1.i;
                        }
                        i__3 = j + j * c_dim1;
                        i__4 = j + j * c_dim1;
                        i__5 = j + l * a_dim1;
                        z__2.r = a[i__5].r * temp1.r - a[i__5].i * temp1.i,
                        z__2.i = a[i__5].r * temp1.i + a[i__5].i * temp1.r;
                        i__6 = j + l * b_dim1;
                        z__3.r = b[i__6].r * temp2.r - b[i__6].i * temp2.i,
                        z__3.i = b[i__6].r * temp2.i + b[i__6].i * temp2.r;
                        z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
                        d__1 = c__[i__4].r + z__1.r;
                        c__[i__3].r = d__1, c__[i__3].i = 0.;
                    }
                }
            }
        } else {
            i__1 = *n;
            for (j = 1; j <= i__1; ++j) {
                if (*beta == 0.) {
                    i__2 = *n;
                    for (i__ = j; i__ <= i__2; ++i__) {
                        i__3 = i__ + j * c_dim1;
                        c__[i__3].r = 0., c__[i__3].i = 0.;
                    }
                } else if (*beta != 1.) {
                    i__2 = *n;
                    for (i__ = j + 1; i__ <= i__2; ++i__) {
                        i__3 = i__ + j * c_dim1;
                        i__4 = i__ + j * c_dim1;
                        z__1.r = *beta * c__[i__4].r, z__1.i = *beta * c__[i__4].i;
                        c__[i__3].r = z__1.r, c__[i__3].i = z__1.i;
                    }
                    i__2 = j + j * c_dim1;
                    i__3 = j + j * c_dim1;
                    d__1 = *beta * c__[i__3].r;
                    c__[i__2].r = d__1, c__[i__2].i = 0.;
                } else {
                    i__2 = j + j * c_dim1;
                    i__3 = j + j * c_dim1;
                    d__1 = c__[i__3].r;
                    c__[i__2].r = d__1, c__[i__2].i = 0.;
                }
                i__2 = *k;
                for (l = 1; l <= i__2; ++l) {
                    i__3 = j + l * a_dim1;
                    i__4 = j + l * b_dim1;
                    if (a[i__3].r != 0. || a[i__3].i != 0. ||
                        (b[i__4].r != 0. || b[i__4].i != 0.)) {
                        d_lmp_cnjg(&z__2, &b[j + l * b_dim1]);
                        z__1.r = alpha->r * z__2.r - alpha->i * z__2.i,
                        z__1.i = alpha->r * z__2.i + alpha->i * z__2.r;
                        temp1.r = z__1.r, temp1.i = z__1.i;
                        i__3 = j + l * a_dim1;
                        z__2.r = alpha->r * a[i__3].r - alpha->i * a[i__3].i,
                        z__2.i = alpha->r * a[i__3].i + alpha->i * a[i__3].r;
                        d_lmp_cnjg(&z__1, &z__2);
                        temp2.r = z__1.r, temp2.i = z__1.i;
                        i__3 = *n;
                        for (i__ = j + 1; i__ <= i__3; ++i__) {
                            i__4 = i__ + j * c_dim1;
                            i__5 = i__ + j * c_dim1;
                            i__6 = i__ + l * a_dim1;
                            z__3.r = a[i__6].r * temp1.r - a[i__6].i * temp1.i,
                            z__3.i = a[i__6].r * temp1.i + a[i__6].i * temp1.r;
                            z__2.r = c__[i__5].r + z__3.r, z__2.i = c__[i__5].i + z__3.i;
                            i__7 = i__ + l * b_dim1;
                            z__4.r = b[i__7].r * temp2.r - b[i__7].i * temp2.i,
                            z__4.i = b[i__7].r * temp2.i + b[i__7].i * temp2.r;
                            z__1.r = z__2.r + z__4.r, z__1.i = z__2.i + z__4.i;
                            c__[i__4].r = z__1.r, c__[i__4].i = z__1.i;
                        }
                        i__3 = j + j * c_dim1;
                        i__4 = j + j * c_dim1;
                        i__5 = j + l * a_dim1;
                        z__2.r = a[i__5].r * temp1.r - a[i__5].i * temp1.i,
                        z__2.i = a[i__5].r * temp1.i + a[i__5].i * temp1.r;
                        i__6 = j + l * b_dim1;
                        z__3.r = b[i__6].r * temp2.r - b[i__6].i * temp2.i,
                        z__3.i = b[i__6].r * temp2.i + b[i__6].i * temp2.r;
                        z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
                        d__1 = c__[i__4].r + z__1.r;
                        c__[i__3].r = d__1, c__[i__3].i = 0.;
                    }
                }
            }
        }
    } else {
        if (upper) {
            i__1 = *n;
            for (j = 1; j <= i__1; ++j) {
                i__2 = j;
                for (i__ = 1; i__ <= i__2; ++i__) {
                    temp1.r = 0., temp1.i = 0.;
                    temp2.r = 0., temp2.i = 0.;
                    i__3 = *k;
                    for (l = 1; l <= i__3; ++l) {
                        d_lmp_cnjg(&z__3, &a[l + i__ * a_dim1]);
                        i__4 = l + j * b_dim1;
                        z__2.r = z__3.r * b[i__4].r - z__3.i * b[i__4].i,
                        z__2.i = z__3.r * b[i__4].i + z__3.i * b[i__4].r;
                        z__1.r = temp1.r + z__2.r, z__1.i = temp1.i + z__2.i;
                        temp1.r = z__1.r, temp1.i = z__1.i;
                        d_lmp_cnjg(&z__3, &b[l + i__ * b_dim1]);
                        i__4 = l + j * a_dim1;
                        z__2.r = z__3.r * a[i__4].r - z__3.i * a[i__4].i,
                        z__2.i = z__3.r * a[i__4].i + z__3.i * a[i__4].r;
                        z__1.r = temp2.r + z__2.r, z__1.i = temp2.i + z__2.i;
                        temp2.r = z__1.r, temp2.i = z__1.i;
                    }
                    if (i__ == j) {
                        if (*beta == 0.) {
                            i__3 = j + j * c_dim1;
                            z__2.r = alpha->r * temp1.r - alpha->i * temp1.i,
                            z__2.i = alpha->r * temp1.i + alpha->i * temp1.r;
                            d_lmp_cnjg(&z__4, alpha);
                            z__3.r = z__4.r * temp2.r - z__4.i * temp2.i,
                            z__3.i = z__4.r * temp2.i + z__4.i * temp2.r;
                            z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
                            d__1 = z__1.r;
                            c__[i__3].r = d__1, c__[i__3].i = 0.;
                        } else {
                            i__3 = j + j * c_dim1;
                            i__4 = j + j * c_dim1;
                            z__2.r = alpha->r * temp1.r - alpha->i * temp1.i,
                            z__2.i = alpha->r * temp1.i + alpha->i * temp1.r;
                            d_lmp_cnjg(&z__4, alpha);
                            z__3.r = z__4.r * temp2.r - z__4.i * temp2.i,
                            z__3.i = z__4.r * temp2.i + z__4.i * temp2.r;
                            z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
                            d__1 = *beta * c__[i__4].r + z__1.r;
                            c__[i__3].r = d__1, c__[i__3].i = 0.;
                        }
                    } else {
                        if (*beta == 0.) {
                            i__3 = i__ + j * c_dim1;
                            z__2.r = alpha->r * temp1.r - alpha->i * temp1.i,
                            z__2.i = alpha->r * temp1.i + alpha->i * temp1.r;
                            d_lmp_cnjg(&z__4, alpha);
                            z__3.r = z__4.r * temp2.r - z__4.i * temp2.i,
                            z__3.i = z__4.r * temp2.i + z__4.i * temp2.r;
                            z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
                            c__[i__3].r = z__1.r, c__[i__3].i = z__1.i;
                        } else {
                            i__3 = i__ + j * c_dim1;
                            i__4 = i__ + j * c_dim1;
                            z__3.r = *beta * c__[i__4].r, z__3.i = *beta * c__[i__4].i;
                            z__4.r = alpha->r * temp1.r - alpha->i * temp1.i,
                            z__4.i = alpha->r * temp1.i + alpha->i * temp1.r;
                            z__2.r = z__3.r + z__4.r, z__2.i = z__3.i + z__4.i;
                            d_lmp_cnjg(&z__6, alpha);
                            z__5.r = z__6.r * temp2.r - z__6.i * temp2.i,
                            z__5.i = z__6.r * temp2.i + z__6.i * temp2.r;
                            z__1.r = z__2.r + z__5.r, z__1.i = z__2.i + z__5.i;
                            c__[i__3].r = z__1.r, c__[i__3].i = z__1.i;
                        }
                    }
                }
            }
        } else {
            i__1 = *n;
            for (j = 1; j <= i__1; ++j) {
                i__2 = *n;
                for (i__ = j; i__ <= i__2; ++i__) {
                    temp1.r = 0., temp1.i = 0.;
                    temp2.r = 0., temp2.i = 0.;
                    i__3 = *k;
                    for (l = 1; l <= i__3; ++l) {
                        d_lmp_cnjg(&z__3, &a[l + i__ * a_dim1]);
                        i__4 = l + j * b_dim1;
                        z__2.r = z__3.r * b[i__4].r - z__3.i * b[i__4].i,
                        z__2.i = z__3.r * b[i__4].i + z__3.i * b[i__4].r;
                        z__1.r = temp1.r + z__2.r, z__1.i = temp1.i + z__2.i;
                        temp1.r = z__1.r, temp1.i = z__1.i;
                        d_lmp_cnjg(&z__3, &b[l + i__ * b_dim1]);
                        i__4 = l + j * a_dim1;
                        z__2.r = z__3.r * a[i__4].r - z__3.i * a[i__4].i,
                        z__2.i = z__3.r * a[i__4].i + z__3.i * a[i__4].r;
                        z__1.r = temp2.r + z__2.r, z__1.i = temp2.i + z__2.i;
                        temp2.r = z__1.r, temp2.i = z__1.i;
                    }
                    if (i__ == j) {
                        if (*beta == 0.) {
                            i__3 = j + j * c_dim1;
                            z__2.r = alpha->r * temp1.r - alpha->i * temp1.i,
                            z__2.i = alpha->r * temp1.i + alpha->i * temp1.r;
                            d_lmp_cnjg(&z__4, alpha);
                            z__3.r = z__4.r * temp2.r - z__4.i * temp2.i,
                            z__3.i = z__4.r * temp2.i + z__4.i * temp2.r;
                            z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
                            d__1 = z__1.r;
                            c__[i__3].r = d__1, c__[i__3].i = 0.;
                        } else {
                            i__3 = j + j * c_dim1;
                            i__4 = j + j * c_dim1;
                            z__2.r = alpha->r * temp1.r - alpha->i * temp1.i,
                            z__2.i = alpha->r * temp1.i + alpha->i * temp1.r;
                            d_lmp_cnjg(&z__4, alpha);
                            z__3.r = z__4.r * temp2.r - z__4.i * temp2.i,
                            z__3.i = z__4.r * temp2.i + z__4.i * temp2.r;
                            z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
                            d__1 = *beta * c__[i__4].r + z__1.r;
                            c__[i__3].r = d__1, c__[i__3].i = 0.;
                        }
                    } else {
                        if (*beta == 0.) {
                            i__3 = i__ + j * c_dim1;
                            z__2.r = alpha->r * temp1.r - alpha->i * temp1.i,
                            z__2.i = alpha->r * temp1.i + alpha->i * temp1.r;
                            d_lmp_cnjg(&z__4, alpha);
                            z__3.r = z__4.r * temp2.r - z__4.i * temp2.i,
                            z__3.i = z__4.r * temp2.i + z__4.i * temp2.r;
                            z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
                            c__[i__3].r = z__1.r, c__[i__3].i = z__1.i;
                        } else {
                            i__3 = i__ + j * c_dim1;
                            i__4 = i__ + j * c_dim1;
                            z__3.r = *beta * c__[i__4].r, z__3.i = *beta * c__[i__4].i;
                            z__4.r = alpha->r * temp1.r - alpha->i * temp1.i,
                            z__4.i = alpha->r * temp1.i + alpha->i * temp1.r;
                            z__2.r = z__3.r + z__4.r, z__2.i = z__3.i + z__4.i;
                            d_lmp_cnjg(&z__6, alpha);
                            z__5.r = z__6.r * temp2.r - z__6.i * temp2.i,
                            z__5.i = z__6.r * temp2.i + z__6.i * temp2.r;
                            z__1.r = z__2.r + z__5.r, z__1.i = z__2.i + z__5.i;
                            c__[i__3].r = z__1.r, c__[i__3].i = z__1.i;
                        }
                    }
                }
            }
        }
    }
    return 0;
}
#ifdef __cplusplus
}
#endif