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Merge "libm: arm: add arm specific sqrt and sqrtf"

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This commit is contained in:
Christopher Ferris 2015-03-05 21:55:20 +00:00 committed by Gerrit Code Review
commit 71bf837982
3 changed files with 94 additions and 4 deletions
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14
libm/Android.mk
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@ -252,8 +252,6 @@ LOCAL_SRC_FILES += \
# -----------------------------------------------------------------------------
LOCAL_SRC_FILES_arm += \
arm/fenv.c \
upstream-freebsd/lib/msun/src/e_sqrt.c \
upstream-freebsd/lib/msun/src/e_sqrtf.c \
upstream-freebsd/lib/msun/src/s_ceil.c \
upstream-freebsd/lib/msun/src/s_ceilf.c \
upstream-freebsd/lib/msun/src/s_fma.c \
@ -277,9 +275,17 @@ endif
# Use the C version on armv7-a since it doesn't support neon instructions.
ifeq ($(arch_variant),armv7-a)
LOCAL_SRC_FILES_arm += upstream-freebsd/lib/msun/src/s_floor.c
LOCAL_SRC_FILES_arm += \
upstream-freebsd/lib/msun/src/e_sqrt.c \
upstream-freebsd/lib/msun/src/e_sqrtf.c \
upstream-freebsd/lib/msun/src/s_floor.c \
else
LOCAL_SRC_FILES_arm += arm/s_floor.S
LOCAL_SRC_FILES_arm += \
arm/e_sqrt.S \
arm/e_sqrtf.S \
arm/s_floor.S \
endif
# -----------------------------------------------------------------------------

45
libm/arm/e_sqrt.S Normal file
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@ -0,0 +1,45 @@
/*
* Copyright (c) 2013-2014, NVIDIA Corporation. All rights reserved.
* Johnny Qiu <joqiu@nvidia.com>
* Shu Zhang <chazhang@nvidia.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <float.h>
#include <private/bionic_asm.h>
ENTRY(sqrt)
vmov.f64 d0, r0, r1
vsqrt.f64 d0, d0
vmov.f64 r0, r1, d0
bx lr
END(sqrt)
#if LDBL_MANT_DIG == 53
.weak sqrtl
.equ sqrtl, sqrt
#endif

39
libm/arm/e_sqrtf.S Normal file
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@ -0,0 +1,39 @@
/*
* Copyright (c) 2013-2014, NVIDIA Corporation. All rights reserved.
* Johhnny Qiu <joqiu@nvidia.com>
* Shu Zhang <chazhang@nvidia.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <private/bionic_asm.h>
ENTRY(sqrtf)
vmov.f32 s0, r0
vsqrt.f32 s0, s0
vmov.f32 r0, s0
bx lr
END(sqrtf)