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/* Write the right ascension ra in sexagesimal format into string*/
void
ra2str (string, lstr, ra, ndec)
char *string; /* Character string (returned) */
int lstr; /* Maximum number of characters in string */
double ra; /* Right ascension in degrees */
int ndec; /* Number of decimal places in seconds */
{
double a,b;
double seconds;
char tstring[64];
int hours;
int minutes;
int isec, ltstr;
double dsgn;
/* Keep RA between 0 and 360 */
if (ra < 0.0 ) {
ra = -ra;
dsgn = -1.0;
}
else
dsgn = 1.0;
ra = fmod(ra, 360.0);
ra *= dsgn;
if (ra < 0.0)
ra = ra + 360.0;
a = ra / 15.0;
/* Convert to hours */
hours = (int) a;
/* Compute minutes */
b = (a - (double)hours) * 60.0;
minutes = (int) b;
/* Compute seconds */
seconds = (b - (double)minutes) * 60.0;
if (ndec > 5) {
if (seconds > 59.999999) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
hours = hours + 1;
}
hours = hours % 24;
(void) sprintf (tstring,"%02d:%02d:%09.6f",hours,minutes,seconds);
}
else if (ndec > 4) {
if (seconds > 59.99999) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
hours = hours + 1;
}
hours = hours % 24;
(void) sprintf (tstring,"%02d:%02d:%08.5f",hours,minutes,seconds);
}
else if (ndec > 3) {
if (seconds > 59.9999) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
hours = hours + 1;
}
hours = hours % 24;
(void) sprintf (tstring,"%02d:%02d:%07.4f",hours,minutes,seconds);
}
else if (ndec > 2) {
if (seconds > 59.999) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
hours = hours + 1;
}
hours = hours % 24;
(void) sprintf (tstring,"%02d:%02d:%06.3f",hours,minutes,seconds);
}
else if (ndec > 1) {
if (seconds > 59.99) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
hours = hours + 1;
}
hours = hours % 24;
(void) sprintf (tstring,"%02d:%02d:%05.2f",hours,minutes,seconds);
}
else if (ndec > 0) {
if (seconds > 59.9) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
hours = hours + 1;
}
hours = hours % 24;
(void) sprintf (tstring,"%02d:%02d:%04.1f",hours,minutes,seconds);
}
else {
isec = (int)(seconds + 0.5);
if (isec > 59) {
isec = 0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
hours = hours + 1;
}
hours = hours % 24;
(void) sprintf (tstring,"%02d:%02d:%02d",hours,minutes,isec);
}
/* Move formatted string to returned string */
ltstr = (int) strlen (tstring);
if (ltstr < lstr-1)
strcpy (string, tstring);
else {
strncpy (string, tstring, lstr-1);
string[lstr-1] = 0;
}
return;
}
/* Write the variable a in sexagesimal format into string */
void
dec2str (string, lstr, dec, ndec)
char *string; /* Character string (returned) */
int lstr; /* Maximum number of characters in string */
double dec; /* Declination in degrees */
int ndec; /* Number of decimal places in arcseconds */
{
double a, b, dsgn, deg1;
double seconds;
char sign;
int degrees;
int minutes;
int isec, ltstr;
char tstring[64];
/* Keep angle between -180 and 360 degrees */
deg1 = dec;
if (deg1 < 0.0 ) {
deg1 = -deg1;
dsgn = -1.0;
}
else
dsgn = 1.0;
deg1 = fmod(deg1, 360.0);
deg1 *= dsgn;
if (deg1 <= -180.0)
deg1 = deg1 + 360.0;
a = deg1;
/* Set sign and do all the rest with a positive */
if (a < 0) {
sign = '-';
a = -a;
}
else
sign = '+';
/* Convert to degrees */
degrees = (int) a;
/* Compute minutes */
b = (a - (double)degrees) * 60.0;
minutes = (int) b;
/* Compute seconds */
seconds = (b - (double)minutes) * 60.0;
if (ndec > 5) {
if (seconds > 59.999999) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
degrees = degrees + 1;
}
(void) sprintf (tstring,"%c%02d:%02d:%09.6f",sign,degrees,minutes,seconds);
}
else if (ndec > 4) {
if (seconds > 59.99999) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
degrees = degrees + 1;
}
(void) sprintf (tstring,"%c%02d:%02d:%08.5f",sign,degrees,minutes,seconds);
}
else if (ndec > 3) {
if (seconds > 59.9999) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
degrees = degrees + 1;
}
(void) sprintf (tstring,"%c%02d:%02d:%07.4f",sign,degrees,minutes,seconds);
}
else if (ndec > 2) {
if (seconds > 59.999) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
degrees = degrees + 1;
}
(void) sprintf (tstring,"%c%02d:%02d:%06.3f",sign,degrees,minutes,seconds);
}
else if (ndec > 1) {
if (seconds > 59.99) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
degrees = degrees + 1;
}
(void) sprintf (tstring,"%c%02d:%02d:%05.2f",sign,degrees,minutes,seconds);
}
else if (ndec > 0) {
if (seconds > 59.9) {
seconds = 0.0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
degrees = degrees + 1;
}
(void) sprintf (tstring,"%c%02d:%02d:%04.1f",sign,degrees,minutes,seconds);
}
else {
isec = (int)(seconds + 0.5);
if (isec > 59) {
isec = 0;
minutes = minutes + 1;
}
if (minutes > 59) {
minutes = 0;
degrees = degrees + 1;
}
(void) sprintf (tstring,"%c%02d:%02d:%02d",sign,degrees,minutes,isec);
}
/* Move formatted string to returned string */
ltstr = (int) strlen (tstring);
if (ltstr < lstr-1)
strcpy (string, tstring);
else {
strncpy (string, tstring, lstr-1);
string[lstr-1] = 0;
}
return;
}
/* Write the angle a in decimal format into string */
void
deg2str (string, lstr, deg, ndec)
char *string; /* Character string (returned) */
int lstr; /* Maximum number of characters in string */
double deg; /* Angle in degrees */
int ndec; /* Number of decimal places in degree string */
{
char degform[8];
int field, ltstr;
char tstring[64];
double deg1;
double dsgn;
/* Keep angle between -180 and 360 degrees */
deg1 = deg;
if (deg1 < 0.0 ) {
deg1 = -deg1;
dsgn = -1.0;
}
else
dsgn = 1.0;
deg1 = fmod(deg1, 360.0);
deg1 *= dsgn;
if (deg1 <= -180.0)
deg1 = deg1 + 360.0;
/* Write angle to string, adding 4 digits to number of decimal places */
field = ndec + 4;
if (ndec > 0) {
sprintf (degform, "%%%d.%df", field, ndec);
sprintf (tstring, degform, deg1);
}
else {
sprintf (degform, "%%%4d", field);
sprintf (tstring, degform, (int)deg1);
}
/* Move formatted string to returned string */
ltstr = (int) strlen (tstring);
if (ltstr < lstr-1)
strcpy (string, tstring);
else {
strncpy (string, tstring, lstr-1);
string[lstr-1] = 0;
}
return;
}
/* Write the variable a in decimal format into field-character string */
void
num2str (string, num, field, ndec)
char *string; /* Character string (returned) */
double num; /* Number */
int field; /* Number of characters in output field (0=any) */
int ndec; /* Number of decimal places in degree string */
{
char numform[8];
if (field > 0) {
if (ndec > 0) {
sprintf (numform, "%%%d.%df", field, ndec);
sprintf (string, numform, num);
}
else {
sprintf (numform, "%%%dd", field);
sprintf (string, numform, (int)num);
}
}
else {
if (ndec > 0) {
sprintf (numform, "%%.%df", ndec);
sprintf (string, numform, num);
}
else {
sprintf (string, "%d", (int)num);
}
}
return;
}
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