mirror of
https://github.com/matrix-construct/construct
synced 2024-09-18 22:48:52 +02:00
32 lines
1.1 KiB
C
32 lines
1.1 KiB
C
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2021 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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/// Compute average of all elements in the input. The result is broadcast
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/// to all elements of the output.
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inline void
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ircd_simt_math_mean_f4lldr(__local float4 *const restrict out,
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__local const float4 *const restrict in,
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const uint num,
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const uint i)
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{
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out[i] = in[i];
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ircd_simt_reduce_add_f4lldr(out, num, i);
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float numerator = 0.0f;
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float4 numeratorv = out[i];
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for(uint k = 0; k < 4; ++k)
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numerator += numeratorv[k];
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out[i] = numerator;
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ircd_simt_broadcast_f4lldr(out, num, i);
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numeratorv = out[i];
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out[i] = numeratorv / (num * 4);
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}
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