mirror of
https://github.com/matrix-construct/construct
synced 2024-07-08 11:38:35 +02:00
34 lines
996 B
C
34 lines
996 B
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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///
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/// provide:
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/// li = local thread id
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/// ln = local group size
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///
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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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{
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const uint
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li = get_local_id(0),
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ln = get_local_size(0);
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out[li] = in[li];
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ircd_simt_reduce_add_f4lldr(out);
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if(li == 0)
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out[li] = ircd_simt_reduce_add_f4(out[li]) / (ln * 4);
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ircd_simt_broadcast_f4lldr(out);
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}
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