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//
// GENERATED FILE
//
use super::*;
use crate::SpiceContext;
use f2rust_std::*;
struct SaveVars {
VALUE: f64,
}
impl SaveInit for SaveVars {
fn new() -> Self {
let mut VALUE: f64 = 0.0;
VALUE = 0.0;
Self { VALUE }
}
}
/// Radians per degree
///
/// Return the number of radians per degree.
///
/// # Brief I/O
///
/// ```text
/// The function returns the number of radians per degree.
/// ```
///
/// # Detailed Output
///
/// ```text
/// The function returns the number of radians per degree: pi/180.
/// The value of pi is determined by the ACOS function. That is,
///
/// RPD = ACOS ( -1.D0 ) / 180.D0
/// ```
///
/// # Exceptions
///
/// ```text
/// Error free.
/// ```
///
/// # Particulars
///
/// ```text
/// The first time the function is referenced, the value is computed
/// as shown above. The value is saved, and returned directly upon
/// subsequent reference.
/// ```
///
/// # Examples
///
/// ```text
/// The code fragment below illustrates the use of RPD.
///
/// C
/// C Convert all input angles to radians.
/// C
/// CLOCK = CLOCK * RPD()
/// CONE = CONE * RPD()
/// TWIST = TWIST * RPD()
///
/// or equivalently,
///
/// C
/// C Convert all input angles to radians.
/// C
/// CALL VPACK ( CLOCK, CONE, CCTWIST, ALBTGAM )
/// CALL VSCL ( RPD(), ALBTGAM, ALBTGAM )
/// CALL VUPACK ( ALBTGAM, CLOCK, CONE, CCTWIST )
/// ```
///
/// # Author and Institution
///
/// ```text
/// J. Diaz del Rio (ODC Space)
/// W.L. Taber (JPL)
/// I.M. Underwood (JPL)
/// ```
///
/// # Version
///
/// ```text
/// - SPICELIB Version 1.0.2, 08-JUL-2020 (JDR)
///
/// Edited the header to comply with NAIF standard.
///
/// - 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 (WLT) (IMU)
/// ```
pub fn rpd(ctx: &mut SpiceContext) -> f64 {
let ret = RPD(ctx.raw_context());
ret
}
//$Procedure RPD ( Radians per degree )
pub fn RPD(ctx: &mut Context) -> f64 {
let save = ctx.get_vars::<SaveVars>();
let save = &mut *save.borrow_mut();
let mut RPD: f64 = 0.0;
//
// Local variables
//
//
// Initial values
//
//
// What is there to say?
//
if (save.VALUE == 0.0) {
save.VALUE = (f64::acos(-1.0) / 180.0);
}
RPD = save.VALUE;
RPD
}