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author | Aldy Hernandez <aldyh@redhat.com> | 2022-08-26 16:57:09 +0200 |
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committer | Aldy Hernandez <aldyh@redhat.com> | 2022-08-26 20:45:30 +0200 |
commit | 1d3145360f95910f0661da0364b91dc7962d44fa (patch) | |
tree | 50409866b00ccbc4796f8c9551667faeaf3d4d39 /gcc | |
parent | 33cae277637d569d66518b6805a84444b8d66e9c (diff) | |
download | gcc-1d3145360f95910f0661da0364b91dc7962d44fa.zip gcc-1d3145360f95910f0661da0364b91dc7962d44fa.tar.gz gcc-1d3145360f95910f0661da0364b91dc7962d44fa.tar.bz2 |
Add real_iszero to real.*
We have real_isnegzero but no real_iszero. We could memcmp with 0,
but that's just ugly.
gcc/ChangeLog:
* real.cc (real_iszero): New.
* real.h (real_iszero): New.
Diffstat (limited to 'gcc')
-rw-r--r-- | gcc/real.cc | 16 | ||||
-rw-r--r-- | gcc/real.h | 6 |
2 files changed, 22 insertions, 0 deletions
diff --git a/gcc/real.cc b/gcc/real.cc index dcf41b7..96f05ec 100644 --- a/gcc/real.cc +++ b/gcc/real.cc @@ -1272,6 +1272,22 @@ real_isneg (const REAL_VALUE_TYPE *r) return r->sign; } +/* Determine whether a floating-point value X is plus or minus zero. */ + +bool +real_iszero (const REAL_VALUE_TYPE *r) +{ + return r->cl == rvc_zero; +} + +/* Determine whether a floating-point value X is zero with SIGN. */ + +bool +real_iszero (const REAL_VALUE_TYPE *r, bool sign) +{ + return real_iszero (r) && r->sign == sign; +} + /* Determine whether a floating-point value X is minus zero. */ bool @@ -295,6 +295,12 @@ extern bool real_isneg (const REAL_VALUE_TYPE *); /* Determine whether a floating-point value X is minus zero. */ extern bool real_isnegzero (const REAL_VALUE_TYPE *); +/* Determine whether a floating-point value X is plus or minus zero. */ +extern bool real_iszero (const REAL_VALUE_TYPE *); + +/* Determine whether a floating-point value X is zero with SIGN. */ +extern bool real_iszero (const REAL_VALUE_TYPE *, bool sign); + /* Test relationships between reals. */ extern bool real_identical (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *); extern bool real_equal (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *); |