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| author | Richard Henderson <rth@redhat.com> | 2004-10-18 09:44:50 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2004-10-18 09:44:50 -0700 |
| commit | b499264121070eb0876ab645d34bea38493c1821 (patch) | |
| tree | d69684e3420ab79e23d88e244440905e1a2e0765 | |
| parent | f072a5c8aa3efbd9c9eb804be38c641479fd4061 (diff) | |
| download | gcc-b499264121070eb0876ab645d34bea38493c1821.zip gcc-b499264121070eb0876ab645d34bea38493c1821.tar.gz gcc-b499264121070eb0876ab645d34bea38493c1821.tar.bz2 | |
* pointer-set.c (hash1): Don't use libm functions in fallback case.
From-SVN: r89231
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/pointer-set.c | 7 |
2 files changed, 7 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index dcd3f1b..8e461b8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2004-10-18 Richard Henderson <rth@redhat.com> + + * pointer-set.c (hash1): Don't use libm functions in fallback case. + 2004-10-18 H.J. Lu <hongjiu.lu@intel.com> PR bootstrap/17684 diff --git a/gcc/pointer-set.c b/gcc/pointer-set.c index f8023c7..b7154de 100644 --- a/gcc/pointer-set.c +++ b/gcc/pointer-set.c @@ -61,11 +61,10 @@ hash1 (const void *p, unsigned long max, unsigned long logmax) #elif HOST_BITS_PER_LONG == 64 const unsigned long A = 0x9e3779b97f4a7c16ul; #else - const double M = (ULONG_MAX + 1.0); - const double B = M / ((sqrt (5) - 1) / 2.0); - const unsigned long A = B - (floor (B / M) * M); + const unsigned long A + = (ULONG_MAX + 1.0L) * 0.6180339887498948482045868343656381177203L; #endif - const unsigned long shift = sizeof (unsigned long) * CHAR_BIT - logmax; + const unsigned long shift = HOST_BITS_PER_LONG - logmax; return ((A * (unsigned long) p) >> shift) & (max - 1); } |