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//
// GENERATED FILE
//
use super::*;
use f2rust_std::*;
//$Procedure ZZDSPC ( SGP4 deep space routine )
pub fn ZZDSPC(
IREZ: i32,
D2201: f64,
D2211: f64,
D3210: f64,
D3222: f64,
D4410: f64,
D4422: f64,
D5220: f64,
D5232: f64,
D5421: f64,
D5433: f64,
DEDT: f64,
DEL1: f64,
DEL2: f64,
DEL3: f64,
DIDT: f64,
DMDT: f64,
DNODT: f64,
DOMDT: f64,
ARGPO: f64,
ARGPDOT: f64,
T: f64,
TC: f64,
GSTO: f64,
XFACT: f64,
XLAMO: f64,
NO: f64,
ATIME: &mut f64,
ECCM: &mut f64,
ARGPM: &mut f64,
INCLM: &mut f64,
XLI: &mut f64,
MM: &mut f64,
XNI: &mut f64,
NODEM: &mut f64,
DNDT: &mut f64,
XN: &mut f64,
ctx: &mut Context,
) -> f2rust_std::Result<()> {
let mut DELT: f64 = 0.0;
let mut FASX2: f64 = 0.0;
let mut FASX4: f64 = 0.0;
let mut FASX6: f64 = 0.0;
let mut FT: f64 = 0.0;
let mut G22: f64 = 0.0;
let mut G32: f64 = 0.0;
let mut G44: f64 = 0.0;
let mut G52: f64 = 0.0;
let mut G54: f64 = 0.0;
let mut RPTIM: f64 = 0.0;
let mut STEP2: f64 = 0.0;
let mut STEPN: f64 = 0.0;
let mut STEPP: f64 = 0.0;
let mut THETA: f64 = 0.0;
let mut X2LI: f64 = 0.0;
let mut X2OMI: f64 = 0.0;
let mut XL: f64 = 0.0;
let mut XLDOT: f64 = 0.0;
let mut XNDDT: f64 = 0.0;
let mut XNDT: f64 = 0.0;
let mut XOMI: f64 = 0.0;
let mut IRET: i32 = 0;
let mut IRETN: i32 = 0;
//
// Local Variables
//
//
// SPICELIB routines.
//
//
// Standard SPICE error handling.
//
if RETURN(ctx) {
return Ok(());
}
CHKIN(b"ZZDSPC", ctx)?;
//
// Constants
//
FASX2 = 0.13130908;
FASX4 = 2.8843198;
FASX6 = 0.37448087;
G22 = 5.7686396;
G32 = 0.95240898;
G44 = 1.8014998;
G52 = 1.050833;
G54 = 4.4108898;
RPTIM = 0.0043752690880113;
STEPP = 720.0;
STEPN = -720.0;
STEP2 = 259200.0;
//
// Calculate deep space resonance effects.
//
*DNDT = 0.0;
THETA = intrinsics::DMOD((GSTO + (TC * RPTIM)), TWOPI(ctx));
*ECCM = (*ECCM + (DEDT * T));
*INCLM = (*INCLM + (DIDT * T));
*ARGPM = (*ARGPM + (DOMDT * T));
*NODEM = (*NODEM + (DNODT * T));
*MM = (*MM + (DMDT * T));
//
// sgp4fix for negative inclinations
// the following if statement should be commented out
//
// IF( INCLM .LT. 0.0D0) THEN
// INCLM = -INCLM
// ARGPM = ARGPM-PI
// NODEM = NODEM+PI
// END IF
//
//
// sgp4fix for propagator problems
//
// The following integration works for negative time steps and
// periods. The specific changes are unknown because the original
// code was so convoluted
//
// sgp4fix Take out atime = 0.0 and fix for faster operation
//
//
// Just in case - should be set in loops if used.
//
FT = 0.0;
if (IREZ != 0) {
//
// UPDATE RESONANCES : NUMERICAL (EULER-MACLAURIN) INTEGRATION
//
// EPOCH RESTART
//
//
// sgp4fix streamline check
//
if (((*ATIME == 0.0) || ((T * *ATIME) <= 0.0)) || (f64::abs(T) < f64::abs(*ATIME))) {
*ATIME = 0.0;
*XNI = NO;
*XLI = XLAMO;
}
//
// sgp4fix move check outside loop
//
if (T > 0.0) {
DELT = STEPP;
} else {
DELT = STEPN;
}
//
// ADDED FOR DO LOOP
//
IRETN = 381;
//
// ADDED FOR LOOP
//
IRET = 0;
while (IRETN == 381) {
//
// DOT TERMS CALCULATED
//
// NEAR - SYNCHRONOUS RESONANCE TERMS
//
if (IREZ != 2) {
XNDT = (((DEL1 * f64::sin((*XLI - FASX2)))
+ (DEL2 * f64::sin((2.0 * (*XLI - FASX4)))))
+ (DEL3 * f64::sin((3.0 * (*XLI - FASX6)))));
XLDOT = (*XNI + XFACT);
XNDDT = (((DEL1 * f64::cos((*XLI - FASX2)))
+ ((2.0 * DEL2) * f64::cos((2.0 * (*XLI - FASX4)))))
+ ((3.0 * DEL3) * f64::cos((3.0 * (*XLI - FASX6)))));
XNDDT = (XNDDT * XLDOT);
} else {
//
// NEAR - HALF-DAY RESONANCE TERMS
//
XOMI = (ARGPO + (ARGPDOT * *ATIME));
X2OMI = (XOMI + XOMI);
X2LI = (*XLI + *XLI);
XNDT = ((((((((((D2201 * f64::sin(((X2OMI + *XLI) - G22)))
+ (D2211 * f64::sin((*XLI - G22))))
+ (D3210 * f64::sin(((XOMI + *XLI) - G32))))
+ (D3222 * f64::sin(((-XOMI + *XLI) - G32))))
+ (D4410 * f64::sin(((X2OMI + X2LI) - G44))))
+ (D4422 * f64::sin((X2LI - G44))))
+ (D5220 * f64::sin(((XOMI + *XLI) - G52))))
+ (D5232 * f64::sin(((-XOMI + *XLI) - G52))))
+ (D5421 * f64::sin(((XOMI + X2LI) - G54))))
+ (D5433 * f64::sin(((-XOMI + X2LI) - G54))));
XLDOT = (*XNI + XFACT);
XNDDT = (((((((D2201 * f64::cos(((X2OMI + *XLI) - G22)))
+ (D2211 * f64::cos((*XLI - G22))))
+ (D3210 * f64::cos(((XOMI + *XLI) - G32))))
+ (D3222 * f64::cos(((-XOMI + *XLI) - G32))))
+ (D5220 * f64::cos(((XOMI + *XLI) - G52))))
+ (D5232 * f64::cos(((-XOMI + *XLI) - G52))))
+ (2.0
* ((((D4410 * f64::cos(((X2OMI + X2LI) - G44)))
+ (D4422 * f64::cos((X2LI - G44))))
+ (D5421 * f64::cos(((XOMI + X2LI) - G54))))
+ (D5433 * f64::cos(((-XOMI + X2LI) - G54))))));
XNDDT = (XNDDT * XLDOT);
}
//
// INTEGRATOR
//
// sgp4fix move end checks to end of routine
//
if (f64::abs((T - *ATIME)) >= STEPP) {
IRET = 0;
IRETN = 381;
} else {
FT = (T - *ATIME);
IRETN = 0;
}
if (IRETN == 381) {
*XLI = ((*XLI + (XLDOT * DELT)) + (XNDT * STEP2));
*XNI = ((*XNI + (XNDT * DELT)) + (XNDDT * STEP2));
*ATIME = (*ATIME + DELT);
}
}
*XN = ((*XNI + (XNDT * FT)) + (((XNDDT * FT) * FT) * 0.5));
XL = ((*XLI + (XLDOT * FT)) + (((XNDT * FT) * FT) * 0.5));
if (IREZ != 1) {
*MM = ((XL - (2.0 * *NODEM)) + (2.0 * THETA));
*DNDT = (*XN - NO);
} else {
*MM = (((XL - *NODEM) - *ARGPM) + THETA);
*DNDT = (*XN - NO);
}
*XN = (NO + *DNDT);
}
CHKOUT(b"ZZDSPC", ctx)?;
Ok(())
}