add -frounding-math to build

diff --git a/configure b/configure
index df1d301114edfb8dfa2aa998e8c39cafdc994a69..4ef6ccceaf888be5b1d29fb3176d7b1f12326b0e 100755 (executable)
--- a/configure
+++ b/configure
@@ -192,6 +192,7 @@ tryflag CFLAGS_C99FSE -ffreestanding \
 || tryflag CFLAGS_C99FSE -fno-builtin
 tryflag CFLAGS_C99FSE -fexcess-precision=standard \
 || tryflag CFLAGS_C99FSE -ffloat-store
+tryflag CFLAGS_C99FSE -frounding-math
 
 #
 # Setup basic default CFLAGS: debug, optimization, and -pipe