Spike, a RISC-V ISA Simulator
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// vnclip: vd[i] = clip(round(vs2[i] + rnd) >> simm)
VI_VI_LOOP_NARROW
({
VRM xrm = P.VU.get_vround_mode();
int64_t int_max = INT64_MAX >> (64 - P.VU.vsew);
int64_t int_min = INT64_MIN >> (64 - P.VU.vsew);
int128_t result = vs2;
unsigned shift = zimm5 & ((sew * 2) - 1);
// rounding
INT_ROUNDING(result, xrm, shift);
result = result >> shift;
// saturation
if (result < int_min) {
result = int_min;
P_SET_OV(1);
} else if (result > int_max) {
result = int_max;
P_SET_OV(1);
}
vd = result;
})