From 12e9cf88962c9cd68d2b80164ce370b725636031 Mon Sep 17 00:00:00 2001
From: Jean Pierre Cimalando <jp-dev@inbox.ru>
Date: Mon, 13 Apr 2020 02:18:20 +0200
Subject: [PATCH] Ensure the extreme values of xfade curves are exact

---
 src/sfizz/Curve.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/sfizz/Curve.cpp b/src/sfizz/Curve.cpp
index 9ad56959..44aa3c24 100644
--- a/src/sfizz/Curve.cpp
+++ b/src/sfizz/Curve.cpp
@@ -84,13 +84,17 @@ Curve Curve::buildPredefinedCurve(int index)
         }
         break;
     case 5:
-        for (unsigned i = 0; i < NumValues; ++i) {
+        curve._points[0] = 0.0;
+        curve._points[NumValues - 1] = 1.0;
+        for (unsigned i = 1; i < NumValues - 1; ++i) {
             double x = i / static_cast<double>(NumValues - 1);
             curve._points[i] = std::sqrt(x);
         }
         break;
     case 6:
-        for (unsigned i = 0; i < NumValues; ++i) {
+        curve._points[0] = 1.0;
+        curve._points[NumValues - 1] = 0.0;
+        for (unsigned i = 1; i < NumValues - 1; ++i) {
             double x = i / static_cast<double>(NumValues - 1);
             curve._points[i] = std::sqrt(1.0 - x);
         }