From 11d1e2e2ded07673411ba872c1e3d0096dc79439 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Mon, 23 Mar 2015 11:26:51 -0400 Subject: [PATCH] fix FLT_ROUNDS regression in C++ applications commit 559de8f5f06da9022cbba70e22e14a710eb74513 redefined FLT_ROUNDS to use an external function that can report the actual current rounding mode, rather than always reporting round-to-nearest. however, float.h did not include 'extern "C"' wrapping for C++, so C++ programs using FLT_ROUNDS ended up with an unresolved reference to a name-mangled C++ function __flt_rounds. --- include/float.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/float.h b/include/float.h index c6429d33..713aadb9 100644 --- a/include/float.h +++ b/include/float.h @@ -1,6 +1,10 @@ #ifndef _FLOAT_H #define _FLOAT_H +#ifdef __cplusplus +extern "C" { +#endif + int __flt_rounds(void); #define FLT_ROUNDS (__flt_rounds()) @@ -41,4 +45,8 @@ int __flt_rounds(void); #include +#ifdef __cplusplus +} +#endif + #endif -- 2.25.1