riscv-pk/softfloat/f64_mul.c

55     uint_fast64_t sigB;
79     sigB  = fracF64UI( uiB );
84         if ( sigA || ((expB == 0x7FF) && sigB) ) goto propagateNaN;
85         magBits = expB | sigB;
89         if ( sigB ) goto propagateNaN;
102         if ( ! sigB ) goto zero;
103         normExpSig = softfloat_normSubnormalF64Sig( sigB );
105         sigB = normExpSig.sig;
111     sigB = (sigB | UINT64_C( 0x0010000000000000 ))<<11;
113     sig128Z = softfloat_mul64To128( sigA, sigB );
116     softfloat_mul64To128M( sigA, sigB, sig128Z );