cmath: use ** for exponentiation in comments
R=rsc
CC=golang-dev
https://golang.org/cl/831045
diff --git a/src/pkg/cmath/exp.go b/src/pkg/cmath/exp.go
index 7f7e53a..1a639c5 100644
--- a/src/pkg/cmath/exp.go
+++ b/src/pkg/cmath/exp.go
@@ -47,7 +47,7 @@
// DEC -10,+10 8700 3.7e-17 1.1e-17
// IEEE -10,+10 30000 3.0e-16 8.7e-17
-// Exp returns e^x, the base-e exponential of x.
+// Exp returns e**x, the base-e exponential of x.
func Exp(x complex128) complex128 {
r := math.Exp(real(x))
s, c := math.Sincos(imag(x))
diff --git a/src/pkg/cmath/polar.go b/src/pkg/cmath/polar.go
index 0573a99..f55aef4 100644
--- a/src/pkg/cmath/polar.go
+++ b/src/pkg/cmath/polar.go
@@ -5,7 +5,7 @@
package cmath
// Polar returns the absolute value r and phase θ of x,
-// such that x = r * e^θi.
+// such that x = r * e**θi.
// The phase is in the range (-Pi, Pi].
func Polar(x complex128) (r, θ float64) {
return Abs(x), Phase(x)
diff --git a/src/pkg/cmath/pow.go b/src/pkg/cmath/pow.go
index bb869843..de2c4db 100644
--- a/src/pkg/cmath/pow.go
+++ b/src/pkg/cmath/pow.go
@@ -42,7 +42,7 @@
// arithmetic domain # trials peak rms
// IEEE -10,+10 30000 9.4e-15 1.5e-15
-// Pow returns x^y, the base-x exponential of y.
+// Pow returns x**y, the base-x exponential of y.
func Pow(x, y complex128) complex128 {
modulus := Abs(x)
if modulus == 0 {
diff --git a/src/pkg/cmath/sqrt.go b/src/pkg/cmath/sqrt.go
index d402318..58bc4b6 100644
--- a/src/pkg/cmath/sqrt.go
+++ b/src/pkg/cmath/sqrt.go
@@ -81,9 +81,9 @@
b *= 0.25
scale = 2
} else {
- a *= 1.8014398509481984e16 // 2^54
+ a *= 1.8014398509481984e16 // 2**54
b *= 1.8014398509481984e16
- scale = 7.450580596923828125e-9 // 2^-27
+ scale = 7.450580596923828125e-9 // 2**-27
}
r := math.Hypot(a, b)
var t float64
