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Convert C++-style comments to C-style comments.

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This commit is contained in:
Dianne Skoll
2025-03-24 11:42:54 -04:00
parent 5ec78739cd
commit cef6e6717c
1 changed files with 32 additions and 29 deletions
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61
src/moon.c
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@@ -720,11 +720,11 @@ void moon_position(double dayOffset, double *ra, double *declination, double *di
double s;
s = w / sqrt(u - v*v);
*ra = l + atan(s / sqrt(1 - s*s)); // Right ascension
*ra = l + atan(s / sqrt(1 - s*s)); /* Right ascension */
s = v / sqrt(u);
*declination = atan(s / sqrt(1 - s*s)); // Declination
*distance = 60.40974 * sqrt(u); // Distance
*declination = atan(s / sqrt(1 - s*s)); /* Declination */
*distance = 60.40974 * sqrt(u); /* Distance */
}
/* Search for moonrise / moonset events during an hour */
@@ -742,21 +742,21 @@ static void test_moon_event(int k, double offset_days, struct MoonInfo *moon_inf
ha[0] = lSideTime - ra[0] + k*K1;
ha[2] = lSideTime - ra[2] + k*K1 + K1;
// Hour Angle and declination at half hour.
/* Hour Angle and declination at half hour. */
ha[1] = (ha[2] + ha[0])/2;
declination[1] = (declination[2] + declination[0])/2;
double s = sin((PI / 180) * latitude);
double c = cos((PI / 180) * latitude);
// refraction + semidiameter at horizon + distance correction
/* refraction + semidiameter at horizon + distance correction */
double z = cos((PI / 180) * (90.567 - 41.685 / distance[0]));
VHz[0] = s * sin(declination[0]) + c * cos(declination[0]) * cos(ha[0]) - z;
VHz[2] = s * sin(declination[2]) + c * cos(declination[2]) * cos(ha[2]) - z;
if (signbit(VHz[0]) == signbit(VHz[2]))
goto noevent; // No event this hour.
goto noevent; /* No event this hour. */
VHz[1] = s * sin(declination[1]) + c * cos(declination[1]) * cos(ha[1]) - z;
@@ -766,21 +766,23 @@ static void test_moon_event(int k, double offset_days, struct MoonInfo *moon_inf
d = b * b - 4 * a * VHz[0];
if (d < 0)
goto noevent; // No event this hour.
goto noevent; /* No event this hour. */
d = sqrt(d);
e = (-b + d) / (2 * a);
if ((e < 0) || (e > 1))
e = (-b - d) / (2 * a);
time = k + e + 1 / 120; // Time since k=0 of event (in hours).
time = k + e + 1 / 120; /* Time since k=0 of event (in hours). */
// The time we started searching + the time from the start of the search to the
// event is the time of the event. Add (time since k=0) - window/2 hours.
/* The time we started searching + the time from the start of the
search to the event is the time of the event. Add (time since
k=0) - window/2 hours. */
time_t eventTime;
eventTime = moon_info->queryTime + (time - MR_WINDOW / 2) *60 *60;
double hz, nz, dz, az;
hz = ha[0] + e * (ha[2] - ha[0]); // Azimuth of the moon at the event.
hz = ha[0] + e * (ha[2] - ha[0]); /* Azimuth of the moon at the event. */
nz = -cos(declination[1]) * sin(hz);
dz = c * sin(declination[1]) - s * cos(declination[1]) * cos(hz);
az = atan2(nz, dz) * (180 / PI);
@@ -788,23 +790,24 @@ static void test_moon_event(int k, double offset_days, struct MoonInfo *moon_inf
az += 360;
}
// If there is no previously recorded event of this type, save this event.
//
// If this event is previous to queryTime, and is the nearest event to queryTime
// of events of its type previous to queryType, save this event, replacing the
// previously recorded event of its type. Events subsequent to queryTime are
// treated similarly, although since events are tested in chronological order
// no replacements will occur as successive events will be further from
// queryTime.
//
// If this event is subsequent to queryTime and there is an event of its type
// previous to queryTime, then there is an event of the other type between the
// two events of this event's type. If the event of the other type is
// previous to queryTime, then it is the nearest event to queryTime that is
// previous to queryTime. In this case save the current event, replacing
// the previously recorded event of its type. Otherwise discard the current
// event.
//
/* If there is no previously recorded event of this type, save this event.
If this event is previous to queryTime, and is the nearest event
to queryTime of events of its type previous to queryType, save
this event, replacing the previously recorded event of its type.
Events subsequent to queryTime are treated similarly, although
since events are tested in chronological order no replacements
will occur as successive events will be further from queryTime.
If this event is subsequent to queryTime and there is an event of
its type previous to queryTime, then there is an event of the
other type between the two events of this event's type. If the
event of the other type is previous to queryTime, then it is the
nearest event to queryTime that is previous to queryTime. In
this case save the current event, replacing the previously
recorded event of its type. Otherwise discard the current
event. */
if ((VHz[0] < 0) && (VHz[2] > 0)) {
if (!moon_info->hasRise ||
((moon_info->riseTime < moon_info->queryTime) == (eventTime < moon_info->queryTime) &&
@@ -831,7 +834,7 @@ static void test_moon_event(int k, double offset_days, struct MoonInfo *moon_inf
}
noevent:
// There are obscure cases in the polar regions that require extra logic.
/* There are obscure cases in the polar regions that require extra logic. */
if (!moon_info->hasRise && !moon_info->hasSet)
moon_info->isVisible = !signbit(VHz[2]);
else if (moon_info->hasRise && !moon_info->hasSet)