Replace spaces with tabs. Fix comment style.

libastro/circum.c

@@ -570,7 +570,7 @@ moon_cir (Now *np, Obj *op)
 	double el;		/* elongation, rads east */
 	double ms;		/* sun's mean anomaly */
 	double md;		/* moon's mean anomaly */
-     double pang;        /* moon's geocentric phase angle */
+	double pang;		/* moon's geocentric phase angle */
 	double i, p;
 
 	moon (mjed, &lam, &bet, &edistau, &ms, &md);	/* mean ecliptic & EOD*/
@@ -591,25 +591,26 @@ moon_cir (Now *np, Obj *op)
 	i = 0.1468*sin(el)*(1 - 0.0549*sin(md))/(1 - 0.0167*sin(ms));
 	op->s_phase = (float)((1+cos(PI-el-degrad(i)))/2*100);
 
-     /* moon's geocentric magnitude based on methodology described in Lane,
-        Adair P.; Irvine, William M. 1973. Monochromatic phase curves and
-        albedos for the lunar disk. Astronomical Journal, Vol. 78, pp. 267-277.
-        Using V band data from their Table V. */
-     pang = raddeg(acos(op->s_phase / 50.0 - 1.0)); /* need range 0-180 degrees */ 
-     if (pang <= 40.0) {
-         p = pang - 20.0; 
-         i = -12.72 + 0.0267 * p + 0.534;
-     } else {
-         p = pang - 80.0;
-         i = -12.72 + p * (0.03188 + p * (1.9621e-4 + p * 1.7256e-6)) + 2.14;
-     }
+	/* moon's geocentric magnitude based on methodology described in Lane,
+	 * Adair P.; Irvine, William M. 1973. Monochromatic phase curves and
+	 * albedos for the lunar disk. Astronomical Journal, Vol. 78, pp. 267-277.
+	 * Using V band data from their Table V.
+	 */
+	pang = raddeg(acos(op->s_phase / 50.0 - 1.0)); /* need range 0-180 degrees */ 
+	if (pang <= 40.0) {
+	    p = pang - 20.0; 
+	    i = -12.72 + 0.0267 * p + 0.534;
+	} else {
+	    p = pang - 80.0;
+	    i = -12.72 + p * (0.03188 + p * (1.9621e-4 + p * 1.7256e-6)) + 2.14;
+	}
 
 #define mean_em_dist (60.2665 * ERAD / MAU) /* mean earth-moon distance in AU
                                              (factor from above reference). */
-     /* correct for earth-moon distance. */
-     i += 5.0 * log10(edistau / mean_em_dist);
-     /* correct for moon-sun distance */
-     i += 5.0 * log10(op->s_sdist);
+	/* correct for earth-moon distance. */
+	i += 5.0 * log10(edistau / mean_em_dist);
+	/* correct for moon-sun distance */
+	i += 5.0 * log10(op->s_sdist);
 
 	set_smag (op, i);