From a5fb8940be29bc4e532bfdcc17d229fa1dc3298d Mon Sep 17 00:00:00 2001
From: pfeatherstone <45853521+pfeatherstone@users.noreply.github.com>
Date: Tue, 9 Aug 2022 23:38:53 +0100
Subject: [PATCH] - possible for fix for MSVC (#2637)

Co-authored-by: pf <pf@me>
---
 dlib/math/bessel.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/dlib/math/bessel.h b/dlib/math/bessel.h
index cacb3b5ad..f8ff24e4c 100644
--- a/dlib/math/bessel.h
+++ b/dlib/math/bessel.h
@@ -17,7 +17,8 @@ namespace dlib
             - works with C++11 onwards
     !*/
     {
-        return detail::cyl_bessel_i<std::common_type_t<R1,R2>>(nu, x);
+        using R = std::common_type_t<R1,R2>;
+        return detail::cyl_bessel_i((R)nu, (R)x);
     }
 
     template<typename R1, typename R2>
@@ -30,7 +31,8 @@ namespace dlib
             - works with C++11 onwards
     !*/
     {
-        return detail::cyl_bessel_j<std::common_type_t<R1,R2>>(nu, x);
+        using R = std::common_type_t<R1,R2>;
+        return detail::cyl_bessel_j((R)nu, (R)x);
     }
 }