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| author | Alan Modra <amodra@bigpond.net.au> | 2006-01-20 00:42:29 +0000 |
|---|---|---|
| committer | Alan Modra <amodra@gcc.gnu.org> | 2006-01-20 11:12:29 +1030 |
| commit | b04c90638b1b3042078fda9582f3b3008ce51bc1 (patch) | |
| tree | f6f5efb500cbb0ac5e1911492d4637b9e6fd58d5 /gcc/libgcc2.c | |
| parent | e9a8eb89de4a63575154ba3fe25a2597b5552f9c (diff) | |
| download | gcc-b04c90638b1b3042078fda9582f3b3008ce51bc1.zip gcc-b04c90638b1b3042078fda9582f3b3008ce51bc1.tar.gz gcc-b04c90638b1b3042078fda9582f3b3008ce51bc1.tar.bz2 | |
libgcc2.c (__floatdisf, [...]): Don't use IBM Extended Double TFmode.
* libgcc2.c (__floatdisf, __floatdidf): Don't use IBM Extended
Double TFmode.
(__floatundisf, __floatundidf): Likewise.
* libgcc2.h (IS_IBM_EXTENDED): Define.
From-SVN: r110004
Diffstat (limited to 'gcc/libgcc2.c')
| -rw-r--r-- | gcc/libgcc2.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c index 03cc448..97717a4 100644 --- a/gcc/libgcc2.c +++ b/gcc/libgcc2.c @@ -1371,7 +1371,14 @@ __floatunditf (UDWtype u) #if (defined(L_floatdisf) && LIBGCC2_HAS_SF_MODE) \ || (defined(L_floatdidf) && LIBGCC2_HAS_DF_MODE) #define DI_SIZE (W_TYPE_SIZE * 2) -#define F_MODE_OK(SIZE) (SIZE < DI_SIZE && SIZE > (DI_SIZE - SIZE + FSSIZE)) +#define F_MODE_OK(SIZE) \ + (SIZE < DI_SIZE \ + && SIZE > (DI_SIZE - SIZE + FSSIZE) \ + /* Don't use IBM Extended Double TFmode for TI->SF calculations. \ + The conversion from long double to float suffers from double \ + rounding, because we convert via double. In any case, the \ + fallback code is faster. */ \ + && !IS_IBM_EXTENDED (SIZE)) #if defined(L_floatdisf) #define FUNC __floatdisf #define FSTYPE SFtype @@ -1476,7 +1483,14 @@ FUNC (DWtype u) #if (defined(L_floatundisf) && LIBGCC2_HAS_SF_MODE) \ || (defined(L_floatundidf) && LIBGCC2_HAS_DF_MODE) #define DI_SIZE (W_TYPE_SIZE * 2) -#define F_MODE_OK(SIZE) (SIZE < DI_SIZE && SIZE > (DI_SIZE - SIZE + FSSIZE)) +#define F_MODE_OK(SIZE) \ + (SIZE < DI_SIZE \ + && SIZE > (DI_SIZE - SIZE + FSSIZE) \ + /* Don't use IBM Extended Double TFmode for TI->SF calculations. \ + The conversion from long double to float suffers from double \ + rounding, because we convert via double. In any case, the \ + fallback code is faster. */ \ + && !IS_IBM_EXTENDED (SIZE)) #if defined(L_floatundisf) #define FUNC __floatundisf #define FSTYPE SFtype |