HP MLIB User's Guide Vol. 1 7th Ed.

238 HP MLIB User’s Guide
SGER/DGER/CGERC/CGERU/ZGERC/ZGERU Rank-1 update
INTEGER*8 m, n, lda, incx, incy
REAL*8 alpha, a(lda, n), x(lenx), y(leny)
CALL DGER(m, n, alpha, x, incx, y, incy, a, lda)
INTEGER*8 m, n, lda, incx, incy
COMPLEX*8 alpha, a(lda, n), x(lenx), y(leny)
CALL CGERC(m, n, alpha, x, incx, y, incy, a, lda)
INTEGER*8 m, n, lda, incx, incy
COMPLEX*8 alpha, a(lda, n), x(lenx), y(leny)
CALL CGERU(m, n, alpha, x, incx, y, incy, a, lda)
INTEGER*8 m, n, lda, incx, incy
COMPLEX*16 alpha, a(lda, n), x(lenx), y(leny)
CALL ZGERC(m, n, alpha, x, incx, y, incy, a, lda)
INTEGER*8 m, n, lda, incx, incy
COMPLEX*16 alpha, a(lda, n), x(lenx), y(leny)
CALL ZGERU(m, n, alpha, x, incx, y, incy, a, lda)
Input m Number of rows in matrix A and elements of vector x,
m ≥ 0. If m = 0, the subprograms do not reference a, x,
or y.
n Number of columns in matrix A and elements of vector
y, n ≥ 0. If n = 0, the subprograms do not reference a, x,
or y.
alpha The scalar α. If alpha = 0, the subprograms do not
reference A, x, or y.
x Array of length lenx = (m−1)×|incx|+1 containing the
m-vector x.
incx Increment for the array x, incx ≠ 0:
incx > 0 x is stored forward in array x; that is,
x
i
is stored in x((i−1)×incx+1).
incx < 0 x is stored backward in array x; that
is, x
i
is stored in x((i−m)×incx+1).
Use incx = 1 if the vector x is stored contiguously in
array x, that is, if x
i
is stored in x(i). Refer to “BLAS
Indexing Conventions” in the introduction to
Chapter 2.
y Array of length leny = (n−1)×|incy|+1 containing the
n-vector y. y is used in conjugated form by CGERC and