fix FLT_ROUNDS regression in C++ applications

commit 559de8f5f0 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.
This commit is contained in:
Rich Felker 2015-03-23 11:26:51 -04:00
parent fc13acc3dc
commit 11d1e2e2de

View File

@ -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 <bits/float.h>
#ifdef __cplusplus
}
#endif
#endif