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[Qemu-devel] [PATCH 04/10] softfloat: Add float*_is_any_nan() functions
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 04/10] softfloat: Add float*_is_any_nan() functions |
Date: |
Mon, 6 Dec 2010 17:00:05 +0000 |
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 <address@hidden>
---
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
- [Qemu-devel] [PATCH V2 00/10] ARM: fix VCVT instructions, Peter Maydell, 2010/12/06
- [Qemu-devel] [PATCH 04/10] softfloat: Add float*_is_any_nan() functions,
Peter Maydell <=
- [Qemu-devel] [PATCH 09/10] softfloat: Add float/double to 16 bit integer conversion functions, Peter Maydell, 2010/12/06
- [Qemu-devel] [PATCH 05/10] ARM: Return correct result for float-to-integer conversion of NaN, Peter Maydell, 2010/12/06
- [Qemu-devel] [PATCH 02/10] ARM: Fix decoding of Neon forms of VCVT between float and fixed point, Peter Maydell, 2010/12/06
- [Qemu-devel] [PATCH 01/10] ARM: Fix decoding of VFP forms of VCVT between float and int/fixed, Peter Maydell, 2010/12/06
- [Qemu-devel] [PATCH 08/10] ARM: Ignore top 16 bits when doing VCVT from 16 bit fixed point, Peter Maydell, 2010/12/06
- [Qemu-devel] [PATCH 06/10] softfloat: Add float*_maybe_silence_nan() functions, Peter Maydell, 2010/12/06
- [Qemu-devel] [PATCH 03/10] ARM: Fix sense of to_integer bit in Neon VCVT float/int conversion, Peter Maydell, 2010/12/06