add numerical recipes library

2025-09-12 18:55:25 +09:00
parent d4dff245bd
commit 2c75620ec9
1344 changed files with 63869 additions and 0 deletions
--- a/lib/nr/k_and_r/recipes/erff.c
+++ b/lib/nr/k_and_r/recipes/erff.c
@@ -0,0 +1,8 @@
+
+float erff(x)
+float x;
+{
+	float gammp();
+
+	return x < 0.0 ? -gammp(0.5,x*x) : gammp(0.5,x*x);
+}