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| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-01-05 11:59:32 -0500 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@ezchip.com> | 2015-01-05 11:59:32 -0500 |
| commit | 1dca195e1c50d69fa4f0d18e821ec68f5d286df4 (patch) | |
| tree | cccf48935689a483d2a815cd8d5d82f5718ce55c /sysdeps/x86_64/x32/sysdep.h | |
| parent | ab70da77ea8076b49ad81a8c06103c51d4e81dc4 (diff) | |
| download | glibc-1dca195e1c50d69fa4f0d18e821ec68f5d286df4.zip glibc-1dca195e1c50d69fa4f0d18e821ec68f5d286df4.tar.gz glibc-1dca195e1c50d69fa4f0d18e821ec68f5d286df4.tar.bz2 | |
lround: provide cast for wordsize-64 version if needed
Platforms with 64-bit registers where 32-bit values need to have the
high 32 bits set in a particular way need to have an explicit cast
when using the 64-bit sysdeps/ieee754/dbl-64/wordsize-64 version
of llround() as lround(). This includes tilegx32, and likely MIPS.
x32 does not need this, and AArch64 ILP32 will not either. Require
it to be specified in sysdep.h to be explicit.
Diffstat (limited to 'sysdeps/x86_64/x32/sysdep.h')
| -rw-r--r-- | sysdeps/x86_64/x32/sysdep.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/x86_64/x32/sysdep.h b/sysdeps/x86_64/x32/sysdep.h index 9b87005..0cbc1a0 100644 --- a/sysdeps/x86_64/x32/sysdep.h +++ b/sysdeps/x86_64/x32/sysdep.h @@ -90,3 +90,7 @@ # define R15_LP "r15d" #endif /* __ASSEMBLER__ */ + +/* On x32, it is not required to normalize a 64-bit value before using + it as a 32-bit value. */ +#define REGISTER_CAST_INT32_TO_INT64 0 |