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Renaming coefficient arrays in cephes

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This commit is contained in:
Kent English
2016-11-17 15:41:39 -05:00
parent 5e2f090b11
commit 1dde9ce04a
2 changed files with 14 additions and 37 deletions
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14
internal/cephes/unity.go
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@@ -22,7 +22,7 @@ const (
* 1/sqrt(2) <= x < sqrt(2)
* Theoretical peak relative error = 2.32e-20
*/
var LP = []float64{
var lP = []float64{
4.5270000862445199635215E-5,
4.9854102823193375972212E-1,
6.5787325942061044846969E0,
@@ -32,7 +32,7 @@ var LP = []float64{
2.0039553499201281259648E1,
}
var LQ = []float64{
var lQ = []float64{
1.5062909083469192043167E1,
8.3047565967967209469434E1,
2.2176239823732856465394E2,
@@ -48,7 +48,7 @@ func log1p(x float64) float64 {
return math.Log(z)
}
z = x * x
z = -0.5*z + x*(z*polevl(x, LP, 6)/p1evl(x, LQ, 6))
z = -0.5*z + x*(z*polevl(x, lP, 6)/p1evl(x, lQ, 6))
return x + z
}
@@ -76,13 +76,13 @@ func log1pmx(x float64) float64 {
* -0.5 <= x <= 0.5
*/
var EP = []float64{
var eP = []float64{
1.2617719307481059087798E-4,
3.0299440770744196129956E-2,
9.9999999999999999991025E-1,
}
var EQ = []float64{
var eQ = []float64{
3.0019850513866445504159E-6,
2.5244834034968410419224E-3,
2.2726554820815502876593E-1,
@@ -101,8 +101,8 @@ func expm1(x float64) float64 {
return math.Exp(x) - 1
}
xx := x * x
r := x * polevl(xx, EP, 2)
r = r / (polevl(xx, EQ, 3) - r)
r := x * polevl(xx, eP, 2)
r = r / (polevl(xx, eQ, 3) - r)
return r + r
}