glibc/include/fenv.h
Joseph Myers 223d1cacc5 Mark fegetround pure (bug 16296).
Bug 16296 notes that fegetround is a pure function and should be
marked as such in fenv.h.  This patch implements that.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by this patch).

	[BZ #16296]
	* math/fenv.h (fegetround): Use __attribute_pure__.
	* include/fenv.h (__fegetround): Likewise.
2015-09-15 20:36:50 +00:00

48 lines
1.4 KiB
C

#ifndef _FENV_H
#include <math/fenv.h>
#ifndef _ISOMAC
# include <stdbool.h>
/* Now define the internal interfaces. */
extern int __feclearexcept (int __excepts);
extern int __fegetexcept (void);
extern int __fegetexceptflag (fexcept_t *__flagp, int __excepts);
extern int __feraiseexcept (int __excepts);
extern int __fesetexceptflag (const fexcept_t *__flagp, int __excepts);
extern int __fegetenv (fenv_t *__envp);
extern int __fesetenv (const fenv_t *__envp);
extern int __feupdateenv (const fenv_t *__envp);
extern __typeof (fegetround) __fegetround __attribute_pure__;
extern __typeof (feholdexcept) __feholdexcept;
extern __typeof (fesetround) __fesetround;
libm_hidden_proto (feraiseexcept)
libm_hidden_proto (__feraiseexcept)
libm_hidden_proto (fegetenv)
libm_hidden_proto (__fegetenv)
libm_hidden_proto (fegetround)
libm_hidden_proto (__fegetround)
libm_hidden_proto (fesetenv)
libm_hidden_proto (__fesetenv)
libm_hidden_proto (fesetround)
libm_hidden_proto (__fesetround)
libm_hidden_proto (feholdexcept)
libm_hidden_proto (__feholdexcept)
libm_hidden_proto (feupdateenv)
libm_hidden_proto (__feupdateenv)
libm_hidden_proto (fetestexcept)
libm_hidden_proto (feclearexcept)
/* Rounding mode context. This allows functions to set/restore rounding mode
only when the desired rounding mode is different from the current rounding
mode. */
struct rm_ctx
{
fenv_t env;
bool updated_status;
};
#endif
#endif