Math Vector Library
Programming Reference Manual Fortran
Version 1.1 DD-00002-111

13.3 vti2 - Vector Inverse Tangent Integral Ti2(x)

subroutine vti2 (n, y, incy, x, incx); 
subroutine vti2f(n, y, incy, x, incx); 
 
subroutine vti2_64 (n, y, incy, x, incx); 
subroutine vti2f_64(n, y, incy, x, incx);

Given an input vector x  and a result vector y  , this function computes:

          ∫ xtan-1(x)
y =Ti2(x)= 0 ---x--- dx

13.3.1 Parameters

N - INTEGER

ENTRY: Number of elements of x  and y  .
CONSTRAINT: n ≥1  .

Y - ARRAY OF REAL

EXIT: Result vector y  .
CONSTRAINT: Must contain n× incy  elements.
CONSTRAINT: Must not overlap with array x  .

INCY - INTEGER

ENTRY: Stride for the vector y  .
CONSTRAINT: incy̸= 0  .
BEHAVIOR: A negative stride will traverse the array in reverse.

X - ARRAY OF REAL

ENTRY: Input vector x  .
CONSTRAINT: Must contain n× incx  elements.
CONSTRAINT: Must not overlap with array y  .

INCX - INTEGER

ENTRY: Stride for the vector x  .
CONSTRAINT: incx̸= 0  .
BEHAVIOR: A negative stride will traverse the array in reverse.