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/cpp/recipes/matsub.cpp
+++ b/lib/nr/cpp/recipes/matsub.cpp
@@ -0,0 +1,11 @@
+#include "nr.h"
+
+void NR::matsub(Mat_I_DP &a, Mat_I_DP &b, Mat_O_DP &c)
+{
+	int i,j;
+
+	int n=a.nrows();
+	for (j=0;j<n;j++)
+		for (i=0;i<n;i++)
+			c[i][j]=a[i][j]-b[i][j];
+}