From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=52609 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PPzhu-0001D5-8L for qemu-devel@nongnu.org; Tue, 07 Dec 2010 10:44:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PPzhq-0006dJ-Mp for qemu-devel@nongnu.org; Tue, 07 Dec 2010 10:43:58 -0500 Received: from mnementh.archaic.org.uk ([81.2.115.146]:13457) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PPzhq-0006bD-Eg for qemu-devel@nongnu.org; Tue, 07 Dec 2010 10:43:54 -0500 From: Peter Maydell Date: Tue, 7 Dec 2010 15:43:37 +0000 Message-Id: <1291736623-3695-9-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1291736623-3695-1-git-send-email-peter.maydell@linaro.org> References: <1291736623-3695-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH 08/14] softfloat: Add float*_is_any_nan() functions List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori , qemu-devel@nongnu.org Add float*_is_any_nan() functions which return true if the argument is a NaN of any kind (quiet or signalling). Signed-off-by: Peter Maydell Reviewed-by: Nathan Froyd --- fpu/softfloat.h | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/fpu/softfloat.h b/fpu/softfloat.h index 9528825..9bece80 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -314,6 +314,11 @@ INLINE int float32_is_zero(float32 a) return (float32_val(a) & 0x7fffffff) == 0; } +INLINE int float32_is_any_nan(float32 a) +{ + return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); +} + #define float32_zero make_float32(0) #define float32_one make_float32(0x3f800000) #define float32_ln2 make_float32(0x3f317218) @@ -386,6 +391,11 @@ INLINE int float64_is_zero(float64 a) return (float64_val(a) & 0x7fffffffffffffffLL) == 0; } +INLINE int float64_is_any_nan(float64 a) +{ + return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); +} + #define float64_zero make_float64(0) #define float64_one make_float64(0x3ff0000000000000LL) #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) -- 1.6.3.3