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-rw-r--r--src/pkg/math/sin.go7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/pkg/math/sin.go b/src/pkg/math/sin.go
index e17daf688..35220cb3e 100644
--- a/src/pkg/math/sin.go
+++ b/src/pkg/math/sin.go
@@ -5,8 +5,13 @@
package math
+/*
+ Floating-point sine and cosine.
+
+ Coefficients are #5077 from Hart & Cheney. (18.80D)
+*/
+
func sinus(x float64, quad int) float64 {
- // Coefficients are #3370 from Hart & Cheney (18.80D).
const (
P0 = .1357884097877375669092680e8
P1 = -.4942908100902844161158627e7