1 files changed, 15 insertions, 0 deletions
diff --git a/gsl-1.9/doc/examples/specfun.c b/gsl-1.9/doc/examples/specfun.c
new file mode 100644
index 0000000..7c1a9b0
--- /dev/null
+++ b/gsl-1.9/doc/examples/specfun.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <gsl/gsl_sf_bessel.h>
+
+int
+main (void)
+{
+  double x = 5.0;
+  double expected = -0.17759677131433830434739701;
+  
+  double y = gsl_sf_bessel_J0 (x);
+
+  printf ("J0(5.0) = %.18f\n", y);
+  printf ("exact   = %.18f\n", expected);
+  return 0;
+}