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smul

ab_riscv_interpreter::v::zve64x::fixed_point::zve64x_fixed_point_helpers

Function smul 

Source 
pub fn smul(a: u64, b: u64, sew: Vsew, mode: Vxrm, vxsat: &mut bool) -> u64
Expand description

Fractional multiply with rounding and saturation: vsmul.

Computes (a * b * 2 + rounding) >> SEW, saturating at the signed maximum when the product of two minimum signed values overflows (INT_MIN * INT_MIN).

Per spec ยง12.4: vd[i] = clip(roundoff_signed(vs2[i] * vs1[i] * 2, SEW)). Sets vxsat on overflow.