From: David Hildenbrand <david@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Peter Maydell" <peter.maydell@linaro.org>,
"Aurelien Jarno" <aurelien@aurel32.net>,
"Alex Bennée" <alex.bennee@linaro.org>,
"David Hildenbrand" <david@redhat.com>
Subject: [Qemu-devel] [PATCH v1] softfloat: add float128_is_{normal, denormal}
Date: Tue, 5 Feb 2019 17:22:53 +0100 [thread overview]
Message-ID: <20190205162253.9155-1-david@redhat.com> (raw)
Needed on s390x, to test for the data class of a number. So it will
gain soon a user.
Signed-off-by: David Hildenbrand <david@redhat.com>
---
include/fpu/softfloat.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 38a5e99cf3..10c31557b4 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -940,6 +940,16 @@ static inline int float128_is_zero_or_denormal(float128 a)
return (a.high & 0x7fff000000000000LL) == 0;
}
+static inline bool float128_is_normal(float128 a)
+{
+ return ((a.high + (1ULL << 47)) & -1ULL >> 1) >= 1ULL << 48;
+}
+
+static inline bool float128_is_denormal(float128 a)
+{
+ return float128_is_zero_or_denormal(a) && !float128_is_zero(a);
+}
+
static inline int float128_is_any_nan(float128 a)
{
return ((a.high >> 48) & 0x7fff) == 0x7fff &&
--
2.17.2
next reply other threads:[~2019-02-05 16:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-05 16:22 David Hildenbrand [this message]
2019-02-06 3:08 ` [Qemu-devel] [PATCH v1] softfloat: add float128_is_{normal, denormal} Richard Henderson
2019-02-06 8:49 ` David Hildenbrand
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