43 lines
1.4 KiB
ArmAsm
43 lines
1.4 KiB
ArmAsm
/*
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* NEON complex multiplication
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* Copyright (C) 2012,2013 Thomas Tsou <tom@tsou.cc>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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.syntax unified
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.text
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.align 2
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.global neon_cmplx_mul_4n
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.type neon_cmplx_mul_4n, %function
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neon_cmplx_mul_4n:
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vpush {q4-q7}
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.loop_mul:
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vld2.32 {q0-q1}, [r1]!
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vld2.32 {q2-q3}, [r2]!
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vmul.f32 q4, q0, q2
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vmul.f32 q5, q1, q3
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vmul.f32 q6, q0, q3
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vmul.f32 q7, q2, q1
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vsub.f32 q8, q4, q5
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vadd.f32 q9, q6, q7
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vst2.32 {q8-q9}, [r0]!
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subs r3, #1
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bne .loop_mul
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vpop {q4-q7}
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bx lr
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.size neon_cmplx_mul_4n, .-neon_cmplx_mul_4n
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.section .note.GNU-stack,"",%progbits
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