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//
// GENERATED FILE
//
use super::*;
use crate::SpiceContext;
use f2rust_std::*;
/// Vector dot product, general dimension
///
/// Compute the dot product of two vectors of arbitrary dimension.
///
/// # Brief I/O
///
/// ```text
/// VARIABLE I/O DESCRIPTION
/// -------- --- --------------------------------------------------
/// V1 I First vector in the dot product.
/// V2 I Second vector in the dot product.
/// NDIM I Dimension of V1 and V2.
///
/// The function returns the value of the dot product of V1 and V2.
/// ```
///
/// # Detailed Input
///
/// ```text
/// V1,
/// V2 are two arbitrary double precision n-dimensional
/// vectors.
///
/// NDIM is the dimension of V1 and V2.
/// ```
///
/// # Detailed Output
///
/// ```text
/// The function returns the value of the dot product (inner product)
/// of V1 and V2:
///
/// < V1, V2 >
/// ```
///
/// # Exceptions
///
/// ```text
/// Error free.
/// ```
///
/// # Particulars
///
/// ```text
/// VDOTG calculates the dot product of V1 and V2 by a simple
/// application of the definition:
///
/// NDIM
/// .------
/// \
/// VDOTG = ) V1(I) * V2(I)
/// /
/// '------
/// I=1
///
/// No error checking is performed to prevent or recover from numeric
/// overflow.
/// ```
///
/// # Examples
///
/// ```text
/// The numerical results shown for this example may differ across
/// platforms. The results depend on the SPICE kernels used as
/// input, the compiler and supporting libraries, and the machine
/// specific arithmetic implementation.
///
/// 1) Suppose that you have a set of double precision n-dimensional
/// vectors. Check if they are orthogonal to the Z-axis in
/// n-dimensional space.
///
///
/// Example code begins here.
///
///
/// PROGRAM VDOTG_EX1
/// IMPLICIT NONE
///
/// C
/// C SPICELIB functions.
/// C
/// DOUBLE PRECISION VDOTG
///
/// C
/// C Local parameters.
/// C
/// INTEGER NDIM
/// PARAMETER ( NDIM = 4 )
///
/// INTEGER SETSIZ
/// PARAMETER ( SETSIZ = 5 )
///
/// C
/// C Local variables.
/// C
/// DOUBLE PRECISION V1 ( NDIM, SETSIZ )
/// DOUBLE PRECISION Z ( NDIM )
///
/// INTEGER I
/// INTEGER J
///
/// C
/// C Define the vector set.
/// C
/// DATA V1 / 1.D0, 0.D0, 0.D0, 0.D0,
/// . 0.D0, 1.D0, 0.D0, 3.D0,
/// . 0.D0, 0.D0, -6.D0, 0.D0,
/// . 10.D0, 0.D0, -1.D0, 0.D0,
/// . 0.D0, 0.D0, 0.D0, 1.D0 /
///
/// DATA Z / 0.D0, 0.D0, 1.D0, 0.D0 /
///
/// C
/// C Check the orthogonality with respect to Z of each
/// C vector in V1.
/// C
/// DO I = 1, SETSIZ
///
/// WRITE(*,*)
/// WRITE(*,'(A,4F6.1)') 'Input vector (V1): ',
/// . ( V1(J,I), J=1,NDIM )
///
/// IF ( VDOTG( V1(1,I), Z, NDIM ) .EQ. 0.D0 ) THEN
///
/// WRITE(*,'(A)') 'V1 and Z are orthogonal.'
///
/// ELSE
///
/// WRITE(*,'(A)') 'V1 and Z are NOT orthogonal.'
///
/// END IF
///
/// END DO
///
/// END
///
///
/// When this program was executed on a Mac/Intel/gfortran/64-bit
/// platform, the output was:
///
///
/// Input vector (V1): 1.0 0.0 0.0 0.0
/// V1 and Z are orthogonal.
///
/// Input vector (V1): 0.0 1.0 0.0 3.0
/// V1 and Z are orthogonal.
///
/// Input vector (V1): 0.0 0.0 -6.0 0.0
/// V1 and Z are NOT orthogonal.
///
/// Input vector (V1): 10.0 0.0 -1.0 0.0
/// V1 and Z are NOT orthogonal.
///
/// Input vector (V1): 0.0 0.0 0.0 1.0
/// V1 and Z are orthogonal.
/// ```
///
/// # Restrictions
///
/// ```text
/// 1) The user is responsible for determining that the vectors V1
/// and V2 are not so large as to cause numeric overflow. In
/// most cases this will not present a problem.
/// ```
///
/// # Author and Institution
///
/// ```text
/// J. Diaz del Rio (ODC Space)
/// W.M. Owen (JPL)
/// W.L. Taber (JPL)
/// ```
///
/// # Version
///
/// ```text
/// - SPICELIB Version 1.1.0, 28-MAY-2021 (JDR)
///
/// Added IMPLICIT NONE statement.
///
/// Edited the header to comply with NAIF standard. Added complete
/// code example. Improved $Particulars section.
///
/// - SPICELIB Version 1.0.1, 10-MAR-1992 (WLT)
///
/// Comment section for permuted index source lines was added
/// following the header.
///
/// - SPICELIB Version 1.0.0, 31-JAN-1990 (WMO)
/// ```
pub fn vdotg(v1: &[f64], v2: &[f64], ndim: i32) -> f64 {
let ret = VDOTG(v1, v2, ndim);
ret
}
//$Procedure VDOTG ( Vector dot product, general dimension )
pub fn VDOTG(V1: &[f64], V2: &[f64], NDIM: i32) -> f64 {
let V1 = DummyArray::new(V1, 1..);
let V2 = DummyArray::new(V2, 1..);
let mut VDOTG: f64 = 0.0;
//
VDOTG = 0.0;
for I in 1..=NDIM {
VDOTG = (VDOTG + (V1[I] * V2[I]));
}
VDOTG
}