arm/insts/fplib.cc

711     int error; // 0, 1, 2 or 3, where 2 means int_mant is wrong by exactly 0.5
728         error = mnt & 3;
732         error = (lsr16(mnt, 1 - exp) & 3) | !!(mnt & (lsl16(1, 1 - exp) - 1));
735     if (!biased_exp && error) { // xx should also check fpscr_val<11>
740     if ((rm == FPLIB_RN && (error == 3 ||
741                             (error == 2 && (int_mant & 1)))) ||
742         (((rm == FPLIB_RP && !sgn) || (rm == FPLIB_RM && sgn)) && error)) {
756     if (error && rm == FPRounding_ODD)
777     if (error) {
795     int error; // 0, 1, 2 or 3, where 2 means int_mant is wrong by exactly 0.5
812         error = mnt & 3;
816         error = (lsr32(mnt, 1 - exp) & 3) | !!(mnt & (lsl32(1, 1 - exp) - 1));
819     if (!biased_exp && error) { // xx should also check fpscr_val<11>
824     if ((rm == FPLIB_RN && (error == 3 ||
825                             (error == 2 && (int_mant & 1)))) ||
826         (((rm == FPLIB_RP && !sgn) || (rm == FPLIB_RM && sgn)) && error)) {
840     if (error && rm == FPRounding_ODD)
854     if (error) {
872     int error; // 0, 1, 2 or 3, where 2 means int_mant is wrong by exactly 0.5
889         error = mnt & 3;
893         error = (lsr64(mnt, 1 - exp) & 3) | !!(mnt & (lsl64(1, 1 - exp) - 1));
896     if (!biased_exp && error) { // xx should also check fpscr_val<11>
901     if ((rm == FPLIB_RN && (error == 3 ||
902                             (error == 2 && (int_mant & 1)))) ||
903         (((rm == FPLIB_RP && !sgn) || (rm == FPLIB_RM && sgn)) && error)) {
917     if (error && rm == FPRounding_ODD)
931     if (error) {
1419     // Convert to FP16_BITS bits, collapsing error into bottom bit:
1456     // Convert to FP32_BITS bits, collapsing error into bottom bit:
1493     // Convert to FP64_BITS bits, collapsing error into bottom bit:
1577     // Normalise into FP16_BITS bits, collapsing error into bottom bit:
1662     // Normalise into FP32_BITS bits, collapsing error into bottom bit:
1754     // Normalise into FP64_BITS bits, collapsing error into bottom bit:
1796     // Normalise into FP16_BITS bits, collapsing error into bottom bit:
1838     // Normalise into FP32_BITS bits, collapsing error into bottom bit:
4840     // Normalise into FP16_BITS bits, collapsing error into bottom bit:
4860     // Normalise into FP32_BITS bits, collapsing error into bottom bit: