From: Ileana Dumitrescu <ileanadumitrescu95@gmail.com>
Date: Thu, 14 Mar 2024 21:19:20 +0200
Description: Fix implicit-function-declaration error for fesetround by
  declaring the function in fenv.h

--- a/src/fenv.h
+++ b/src/fenv.h
@@ -5,3 +5,5 @@
 #define FE_UPWARD 2
 #define PTHREAD_MUTEX_INITIALIZER 0
 #endif
+
+int fesetround (int);