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redo and clean up math.

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R=r
DELTA=243  (60 added, 72 deleted, 111 changed)
OCL=22909
CL=22912
This commit is contained in:
Russ Cox 2009-01-15 19:11:32 -08:00
parent 293c8f8c65
commit 2c8d9a5619
12 changed files with 170 additions and 182 deletions
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35
src/lib/math/all_test.go
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@ -154,7 +154,7 @@ var tanh = []float64 {
-9.9999994291374019e-01,
}
func Tolerance(a,b,e float64) bool {
func tolerance(a,b,e float64) bool {
d := a-b;
if d < 0 {
d = -d;
@ -168,16 +168,16 @@ func Tolerance(a,b,e float64) bool {
}
return d < e;
}
func Close(a,b float64) bool {
return Tolerance(a, b, 1e-14);
func close(a,b float64) bool {
return tolerance(a, b, 1e-14);
}
func VeryClose(a,b float64) bool {
return Tolerance(a, b, 4e-16);
func veryclose(a,b float64) bool {
return tolerance(a, b, 4e-16);
}
export func TestAsin(t *testing.T) {
for i := 0; i < len(vf); i++ {
if f := math.Asin(vf[i]/10); !VeryClose(asin[i], f) {
if f := math.Asin(vf[i]/10); !veryclose(asin[i], f) {
t.Errorf("math.Asin(%g) = %g, want %g\n", vf[i]/10, f, asin[i]);
}
}
@ -185,7 +185,7 @@ export func TestAsin(t *testing.T) {
export func TestAtan(t *testing.T) {
for i := 0; i < len(vf); i++ {
if f := math.Atan(vf[i]); !VeryClose(atan[i], f) {
if f := math.Atan(vf[i]); !veryclose(atan[i], f) {
t.Errorf("math.Atan(%g) = %g, want %g\n", vf[i], f, atan[i]);
}
}
@ -193,7 +193,7 @@ export func TestAtan(t *testing.T) {
export func TestExp(t *testing.T) {
for i := 0; i < len(vf); i++ {
if f := math.Exp(vf[i]); !VeryClose(exp[i], f) {
if f := math.Exp(vf[i]); !veryclose(exp[i], f) {
t.Errorf("math.Exp(%g) = %g, want %g\n", vf[i], f, exp[i]);
}
}
@ -214,15 +214,14 @@ export func TestLog(t *testing.T) {
t.Errorf("math.Log(%g) = %g, want %g\n", a, f, log[i]);
}
}
const Ln10 = 2.30258509299404568401799145468436421;
if f := math.Log(10); f != Ln10 {
t.Errorf("math.Log(%g) = %g, want %g\n", 10, f, Ln10);
if f := math.Log(10); f != math.Ln10 {
t.Errorf("math.Log(%g) = %g, want %g\n", 10, f, math.Ln10);
}
}
export func TestPow(t *testing.T) {
for i := 0; i < len(vf); i++ {
if f := math.Pow(10, vf[i]); !Close(pow[i], f) {
if f := math.Pow(10, vf[i]); !close(pow[i], f) {
t.Errorf("math.Pow(10, %.17g) = %.17g, want %.17g\n", vf[i], f, pow[i]);
}
}
@ -230,7 +229,7 @@ export func TestPow(t *testing.T) {
export func TestSin(t *testing.T) {
for i := 0; i < len(vf); i++ {
if f := math.Sin(vf[i]); !Close(sin[i], f) {
if f := math.Sin(vf[i]); !close(sin[i], f) {
t.Errorf("math.Sin(%g) = %g, want %g\n", vf[i], f, sin[i]);
}
}
@ -238,7 +237,7 @@ export func TestSin(t *testing.T) {
export func TestSinh(t *testing.T) {
for i := 0; i < len(vf); i++ {
if f := math.Sinh(vf[i]); !VeryClose(sinh[i], f) {
if f := math.Sinh(vf[i]); !veryclose(sinh[i], f) {
t.Errorf("math.Sinh(%g) = %g, want %g\n", vf[i], f, sinh[i]);
}
}
@ -247,7 +246,7 @@ export func TestSinh(t *testing.T) {
export func TestSqrt(t *testing.T) {
for i := 0; i < len(vf); i++ {
a := math.Fabs(vf[i]);
if f := math.Sqrt(a); !VeryClose(sqrt[i], f) {
if f := math.Sqrt(a); !veryclose(sqrt[i], f) {
t.Errorf("math.Sqrt(%g) = %g, want %g\n", a, f, floor[i]);
}
}
@ -255,7 +254,7 @@ export func TestSqrt(t *testing.T) {
export func TestTan(t *testing.T) {
for i := 0; i < len(vf); i++ {
if f := math.Tan(vf[i]); !Close(tan[i], f) {
if f := math.Tan(vf[i]); !close(tan[i], f) {
t.Errorf("math.Tan(%g) = %g, want %g\n", vf[i], f, tan[i]);
}
}
@ -263,7 +262,7 @@ export func TestTan(t *testing.T) {
export func TestTanh(t *testing.T) {
for i := 0; i < len(vf); i++ {
if f := math.Tanh(vf[i]); !VeryClose(tanh[i], f) {
if f := math.Tanh(vf[i]); !veryclose(tanh[i], f) {
t.Errorf("math.Tanh(%g) = %g, want %g\n", vf[i], f, tanh[i]);
}
}
@ -272,7 +271,7 @@ export func TestTanh(t *testing.T) {
export func TestHypot(t *testing.T) {
for i := 0; i < len(vf); i++ {
a := math.Fabs(tanh[i]*math.Sqrt(2));
if f := math.Hypot(tanh[i], tanh[i]); !VeryClose(a, f) {
if f := math.Hypot(tanh[i], tanh[i]); !veryclose(a, f) {
t.Errorf("math.Hypot(%g, %g) = %g, want %g\n", tanh[i], tanh[i], f, a);
}
}