1 /* Copyright (C) 2010-2020 The RetroArch team
3 * ---------------------------------------------------------------------------------------
4 * The following license statement only applies to this file (float_to_s16_neon.S).
5 * ---------------------------------------------------------------------------------------
7 * Permission is hereby granted, free of charge,
8 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation the rights to
10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
11 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
16 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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22 #if defined(__ARM_NEON__) && defined(HAVE_ARM_NEON_ASM_OPTIMIZATIONS)
29 .globl convert_float_s16_asm
31 .type convert_float_s16_asm, %function
33 .globl _convert_float_s16_asm
35 .type _convert_float_s16_asm, %function
37 # convert_float_s16_asm(int16_t *out, const float *in, size_t samples)
38 convert_float_s16_asm:
39 _convert_float_s16_asm:
40 # Hacky way to get a constant of 2^15.
41 # ((2^4)^2)^2 * 0.5 = 2^15
50 vld1.f32 {q0-q1}, [r1]!
61 vst1.f32 {d4-d5}, [r0]!
63 # Guaranteed to get samples in multiples of 8.