1 files changed, 25 insertions, 25 deletions

diff --git a/src/lib/math/atan.go b/src/lib/math/atan.go
index 43990fe40..f2fd7ed33 100644
--- a/src/lib/math/atan.go
+++ b/src/lib/math/atan.go
@@ -15,30 +15,30 @@ package math
 
 const
 (
-	p4	= .161536412982230228262e2;
-	p3	= .26842548195503973794141e3;
-	p2	= .11530293515404850115428136e4;
-	p1	= .178040631643319697105464587e4;
-	p0	= .89678597403663861959987488e3;
-	q4	= .5895697050844462222791e2;
-	q3	= .536265374031215315104235e3;
-	q2	= .16667838148816337184521798e4;
-	q1	= .207933497444540981287275926e4;
-	q0	= .89678597403663861962481162e3;
-	pio2	= .15707963267948966192313216e1;
-	pio4	= .7853981633974483096156608e0;
-	sq2p1	= .2414213562373095048802e1;		// sqrt(2)+1
-	sq2m1	= .414213562373095048802e0;		// sqrt(2)-1
+	ap4	= .161536412982230228262e2;
+	ap3	= .26842548195503973794141e3;
+	ap2	= .11530293515404850115428136e4;
+	ap1	= .178040631643319697105464587e4;
+	ap0	= .89678597403663861959987488e3;
+	aq4	= .5895697050844462222791e2;
+	aq3	= .536265374031215315104235e3;
+	aq2	= .16667838148816337184521798e4;
+	aq1	= .207933497444540981287275926e4;
+	aq0	= .89678597403663861962481162e3;
+	apio2	= .15707963267948966192313216e1;
+	apio4	= .7853981633974483096156608e0;
+	asq2p1	= .2414213562373095048802e1;		// sqrt(2)+1
+	asq2m1	= .414213562373095048802e0;		// sqrt(2)-1
 )
 
 /*
  *	xatan evaluates a series valid in the
  *	range [-0.414...,+0.414...]. (tan(pi/8))
  */
-func Xatan(arg float64) float64 {
+func xatan(arg float64) float64 {
 	argsq := arg*arg;
-	value := ((((p4*argsq + p3)*argsq + p2)*argsq + p1)*argsq + p0);
-	value = value/(((((argsq + q4)*argsq + q3)*argsq + q2)*argsq + q1)*argsq + q0);
+	value := ((((ap4*argsq + ap3)*argsq + ap2)*argsq + ap1)*argsq + ap0);
+	value = value/(((((argsq + aq4)*argsq + aq3)*argsq + aq2)*argsq + aq1)*argsq + aq0);
 	return value*arg;
 }
 
@@ -46,14 +46,14 @@ func Xatan(arg float64) float64 {
  *	satan reduces its argument (known to be positive)
  *	to the range [0,0.414...] and calls xatan.
  */
-func Satan(arg float64) float64 {
-	if arg < sq2m1 {
-		return Xatan(arg);
+func satan(arg float64) float64 {
+	if arg < asq2m1 {
+		return xatan(arg);
 	}
-	if arg > sq2p1 {
-		return pio2 - Xatan(1/arg);
+	if arg > asq2p1 {
+		return apio2 - xatan(1/arg);
 	}
-	return pio4 + Xatan((arg-1)/(arg+1));
+	return apio4 + xatan((arg-1)/(arg+1));
 }
 
 /*
@@ -62,7 +62,7 @@ func Satan(arg float64) float64 {
  */
 export func Atan(arg float64) float64 {
 	if arg > 0 {
-		return Satan(arg);
+		return satan(arg);
 	}
-	return -Satan(-arg);
+	return -satan(-arg);
 }