121     SI F   abs_  (F v)          { return fabsf(v); }  in abs_()  function
195     SI F   abs_  (F v)                           { return vabsq_f32(v);            }
355     SI F   abs_  (F v)          { return _mm256_and_ps(v, 0-v); }
686     SI F   abs_(F v)           { return _mm_and_ps(v, 0-v); }
1699       c = (1.0f - abs_(2.0f * l - 1)) * s;  in STAGE()
1702         F q = clamp_01(abs_(fract(hue) * 6.0f - 3.0f) - 1.0f);  in STAGE()
2282     return abs_( (v-limit) - (limit+limit)*floor_((v-limit)*(invLimit*0.5f)) - limit );  in exclusive_mirror()
2294 STAGE(mirror_x_1, Ctx::None) { r = clamp_01(abs_( (r-1.0f) - two(floor_((r-1.0f)*0.5f)) - 1.0f )); }  in STAGE()
2462     F xabs = abs_(X),  in STAGE()
2463       yabs = abs_(Y);  in STAGE()
2688             return abs_( (v-limit) - (limit+limit)*floor_((v-limit)*(invLimit*0.5f)) - limit );  in tile()
3181 SI F abs_(F x) { return sk_bit_cast<F>( sk_bit_cast<I32>(x) & 0x7fffffff ); }
3861     x = clamp_01(abs_( (x-1.0f) - two(floor_((x-1.0f)*0.5f)) - 1.0f ));
3973     F xabs = abs_(x),
3974       yabs = abs_(y);