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/third_party/mesa3d/src/compiler/nir/
H A Dnir_lower_double_ops.c203 * h_1 = h_0 * r_0 + h_0 in lower_sqrt_rsq()
205 * Now g_1 ~= sqrt(a), and h_1 ~= 1/(2 * sqrt(a)). We could continue in lower_sqrt_rsq()
222 * = g_1 + h_1 * (a - g_1^2) in lower_sqrt_rsq()
234 * h_1 = h_0 * (.5 - h_0 * g_0) + h_0 in lower_sqrt_rsq()
240 * we don't need the inverse to do a Newton-Raphson step; we just need h_1, in lower_sqrt_rsq()
244 * y_1 = 2 * h_1 in lower_sqrt_rsq()
245 * r_1 = .5 - h_1 * y_1 * a in lower_sqrt_rsq()
250 * y_1 up front instead of h_1, and it lets us share the code for the in lower_sqrt_rsq()
258 * h_1 = h_0 * r_0 + h_0 in lower_sqrt_rsq()
262 * g_2 = h_1 * r_ in lower_sqrt_rsq()
278 nir_ssa_def *h_1 = nir_ffma(b, h_0, r_0, h_0); lower_sqrt_rsq() local
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/third_party/ffmpeg/libavfilter/
H A Dvf_ciescope.c1414 const int h_1 = h - 1; in filter_frame() local
1436 wy = h_1 - h_1 * cy; in filter_frame()

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