46 lines
1.1 KiB
Cheetah
46 lines
1.1 KiB
Cheetah
struct Params {
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ne: u32,
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// offsets in elements
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offset_src0: u32,
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offset_src1: u32,
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offset_dst: u32,
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stride_src1_0: u32,
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stride_src1_1: u32,
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stride_src1_2: u32,
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stride_src1_3: u32,
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a_ne0: u32,
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a_ne1: u32,
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a_ne2: u32,
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b_ne0: u32,
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b_ne1: u32,
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b_ne2: u32,
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b_ne3: u32,
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};
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fn src1_index(_i: u32) -> u32 {
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var i = _i;
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let a_i3 = i / (params.a_ne2 * params.a_ne1 * params.a_ne0);
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i = i % (params.a_ne2 * params.a_ne1 * params.a_ne0);
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let a_i2 = i / (params.a_ne1 * params.a_ne0);
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i = i % (params.a_ne1 * params.a_ne0);
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let a_i1 = i / params.a_ne0;
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let a_i0 = i % params.a_ne0;
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// handle repetition of b
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// index loops back to the beginning and repeats after elements are exhausted = modulo
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let b_i0 = a_i0 % params.b_ne0;
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let b_i1 = a_i1 % params.b_ne1;
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let b_i2 = a_i2 % params.b_ne2;
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let b_i3 = a_i3 % params.b_ne3;
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// compute index for position in b's flat array
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return b_i0 * params.stride_src1_0 +
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b_i1 * params.stride_src1_1 +
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b_i2 * params.stride_src1_2 +
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b_i3 * params.stride_src1_3;
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}
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