lib/glibc
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Make fma use of Dekker and Knuth algorithms use round-to-nearest (bug 14796).

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This commit is contained in:
Joseph Myers
2012-11-03 19:48:53 +00:00
parent fbeafedeea
commit 5b5b04d628
34 changed files with 274 additions and 21 deletions
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3
sysdeps/sparc/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
Copyright (C) 1997-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -39,4 +39,5 @@ strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

12
sysdeps/sparc/fpu/fenv_private.h
View File

@ -13,6 +13,15 @@ libc_feholdexcept (fenv_t *e)
__fenv_ldfsr(etmp);
}
static __always_inline void
libc_fesetround (int r)
{
fenv_t etmp;
__fenv_stfsr(etmp);
etmp = (etmp & ~__FE_ROUND_MASK) | (r);
__fenv_ldfsr(etmp);
}
static __always_inline void
libc_feholdexcept_setround (fenv_t *e, int r)
{
@ -79,6 +88,7 @@ libc_feresetround (fenv_t *e)
}
#define libc_feholdexceptf libc_feholdexcept
#define libc_fesetroundf libc_fesetround
#define libc_feholdexcept_setroundf libc_feholdexcept_setround
#define libc_fetestexceptf libc_fetestexcept
#define libc_fesetenvf libc_fesetenv
@ -87,6 +97,7 @@ libc_feresetround (fenv_t *e)
#define libc_feholdsetroundf libc_feholdsetround
#define libc_feresetroundf libc_feresetround
#define libc_feholdexcept libc_feholdexcept
#define libc_fesetround libc_fesetround
#define libc_feholdexcept_setround libc_feholdexcept_setround
#define libc_fetestexcept libc_fetestexcept
#define libc_fesetenv libc_fesetenv
@ -95,6 +106,7 @@ libc_feresetround (fenv_t *e)
#define libc_feholdsetround libc_feholdsetround
#define libc_feresetround libc_feresetround
#define libc_feholdexceptl libc_feholdexcept
#define libc_fesetroundl libc_fesetround
#define libc_feholdexcept_setroundl libc_feholdexcept_setround
#define libc_fetestexceptl libc_fetestexcept
#define libc_fesetenvl libc_fesetenv