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[Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infi
From: |
Christophe Lyon |
Subject: |
[Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512. |
Date: |
Fri, 18 Feb 2011 15:49:15 +0100 |
These constants and utility function are needed to implement some
helpers. Defining constants avoids the need to re-compute them at
runtime.
Signed-off-by: Christophe Lyon <address@hidden>
---
fpu/softfloat.h | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/fpu/softfloat.h b/fpu/softfloat.h
index f34a938..9bd4a50 100644
--- a/fpu/softfloat.h
+++ b/fpu/softfloat.h
@@ -379,9 +379,15 @@ INLINE int float32_is_zero_or_denormal(float32 a)
return (float32_val(a) & 0x7f800000) == 0;
}
+INLINE float32 float32_set_sign(float32 a, int sign)
+{
+ return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31));
+}
+
#define float32_zero make_float32(0)
#define float32_one make_float32(0x3f800000)
#define float32_ln2 make_float32(0x3f317218)
+#define float32_infinity make_float32(0x7f800000)
/*----------------------------------------------------------------------------
@@ -482,6 +488,9 @@ INLINE int float64_is_any_nan(float64 a)
#define float64_zero make_float64(0)
#define float64_one make_float64(0x3ff0000000000000LL)
#define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
+#define float64_half make_float64(0x3fe0000000000000LL)
+#define float64_256 make_float64(0x4070000000000000LL)
+#define float64_512 make_float64(0x4080000000000000LL)
/*----------------------------------------------------------------------------
| The pattern for a default generated double-precision NaN.
--
1.7.2.3
- [Qemu-devel] [PATCH v4 0/4] ARM: fix Neon VRECPE and VRSQRTE instructions., Christophe Lyon, 2011/02/18
- [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512.,
Christophe Lyon <=
- Re: [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Aurelien Jarno, 2011/02/20
- Re: [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Peter Maydell, 2011/02/20
- Re: [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Aurelien Jarno, 2011/02/20
- Re: [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Christophe Lyon, 2011/02/21
[Qemu-devel] [PATCH 3/4] target-arm: fix support for VRECPE., Christophe Lyon, 2011/02/18
[Qemu-devel] [PATCH 4/4] target-arm: fix support for VRSQRTE., Christophe Lyon, 2011/02/18
[Qemu-devel] [PATCH 1/4] softfloat: move all default NaN definitions to softfloat.h., Christophe Lyon, 2011/02/18