From a0da08b637212d34924f4ab1ac2003ee4ffa6dd7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ne=C4=8Dada?= <marek@necada.org>
Date: Thu, 13 Sep 2018 05:32:07 +0300
Subject: [PATCH] Fix  normalisation of test sigma0 factor. Ewald sum working
 now!

Former-commit-id: e65a370e83c68c6c3553f13312b9280a3413b200
---
 tests/ewalds.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/ewalds.c b/tests/ewalds.c
index bfd3e2e..76672d9 100644
--- a/tests/ewalds.c
+++ b/tests/ewalds.c
@@ -213,7 +213,7 @@ ewaldtest_triang_results *ewaldtest_triang(const ewaldtest_triang_params p) {
 
   // Now calculate the reference values [LT(4.16)]
   results->regsigmas_416 = calloc(nelem_sc, sizeof(complex double));
-  results->regsigmas_416[0] = -1/M_SQRTPI; 
+  results->regsigmas_416[0] = -2 * c->legendre0[gsl_sf_legendre_array_index(0,0)];
   
   {
     double legendres[gsl_sf_legendre_array_n(p.lMax)];