NAME

       rscl - rscl: scale vector by reciprocal

SYNOPSIS

   Functions
       subroutine csrscl (n, sa, sx, incx)
           CSRSCL multiplies a vector by the reciprocal of a real scalar.
       subroutine drscl (n, sa, sx, incx)
           DRSCL multiplies a vector by the reciprocal of a real scalar.
       subroutine srscl (n, sa, sx, incx)
           SRSCL multiplies a vector by the reciprocal of a real scalar.
       subroutine zdrscl (n, sa, sx, incx)
           ZDRSCL multiplies a vector by the reciprocal of a real scalar.

Detailed Description

Function Documentation

   subroutine csrscl (integer n, real sa, complex, dimension( * ) sx, integer incx)
       CSRSCL multiplies a vector by the reciprocal of a real scalar.

       Purpose:

            CSRSCL multiplies an n-element complex vector x by the real scalar
            1/a.  This is done without overflow or underflow as long as
            the final result x/a does not overflow or underflow.

       Parameters
           N

                     N is INTEGER
                     The number of components of the vector x.

           SA

                     SA is REAL
                     The scalar a which is used to divide each component of x.
                     SA must be >= 0, or the subroutine will divide by zero.

           SX

                     SX is COMPLEX array, dimension
                                    (1+(N-1)*abs(INCX))
                     The n-element vector x.

           INCX

                     INCX is INTEGER
                     The increment between successive values of the vector SX.
                     > 0:  SX(1) = X(1) and SX(1+(i-1)*INCX) = x(i),     1< i<= n

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

   subroutine drscl (integer n, double precision sa, double precision, dimension( * ) sx, integer incx)
       DRSCL multiplies a vector by the reciprocal of a real scalar.

       Purpose:

            DRSCL multiplies an n-element real vector x by the real scalar 1/a.
            This is done without overflow or underflow as long as
            the final result x/a does not overflow or underflow.

       Parameters
           N

                     N is INTEGER
                     The number of components of the vector x.

           SA

                     SA is DOUBLE PRECISION
                     The scalar a which is used to divide each component of x.
                     SA must be >= 0, or the subroutine will divide by zero.

           SX

                     SX is DOUBLE PRECISION array, dimension
                                    (1+(N-1)*abs(INCX))
                     The n-element vector x.

           INCX

                     INCX is INTEGER
                     The increment between successive values of the vector SX.
                     > 0:  SX(1) = X(1) and SX(1+(i-1)*INCX) = x(i),     1< i<= n

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

   subroutine srscl (integer n, real sa, real, dimension( * ) sx, integer incx)
       SRSCL multiplies a vector by the reciprocal of a real scalar.

       Purpose:

            SRSCL multiplies an n-element real vector x by the real scalar 1/a.
            This is done without overflow or underflow as long as
            the final result x/a does not overflow or underflow.

       Parameters
           N

                     N is INTEGER
                     The number of components of the vector x.

           SA

                     SA is REAL
                     The scalar a which is used to divide each component of x.
                     SA must be >= 0, or the subroutine will divide by zero.

           SX

                     SX is REAL array, dimension
                                    (1+(N-1)*abs(INCX))
                     The n-element vector x.

           INCX

                     INCX is INTEGER
                     The increment between successive values of the vector SX.
                     > 0:  SX(1) = X(1) and SX(1+(i-1)*INCX) = x(i),     1< i<= n

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

   subroutine zdrscl (integer n, double precision sa, complex*16, dimension( * ) sx, integer incx)
       ZDRSCL multiplies a vector by the reciprocal of a real scalar.

       Purpose:

            ZDRSCL multiplies an n-element complex vector x by the real scalar
            1/a.  This is done without overflow or underflow as long as
            the final result x/a does not overflow or underflow.

       Parameters
           N

                     N is INTEGER
                     The number of components of the vector x.

           SA

                     SA is DOUBLE PRECISION
                     The scalar a which is used to divide each component of x.
                     SA must be >= 0, or the subroutine will divide by zero.

           SX

                     SX is COMPLEX*16 array, dimension
                                    (1+(N-1)*abs(INCX))
                     The n-element vector x.

           INCX

                     INCX is INTEGER
                     The increment between successive values of the vector SX.
                     > 0:  SX(1) = X(1) and SX(1+(i-1)*INCX) = x(i),     1< i<= n

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

Author

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Version 3.12.0                              Sun Jul 20 2025 01:40:05                                     rscl(3)