diff options
| -rw-r--r-- | fpu/softfloat.c | 29 | ||||
| -rw-r--r-- | include/fpu/softfloat.h | 1 |
2 files changed, 30 insertions, 0 deletions
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 57445b3..60b4702 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -3780,6 +3780,35 @@ bfloat16 int16_to_bfloat16(int16_t a, float_status *status) return int64_to_bfloat16_scalbn(a, 0, status); } +float128 int128_to_float128(Int128 a, float_status *status) +{ + FloatParts128 p = { }; + int shift; + + if (int128_nz(a)) { + p.cls = float_class_normal; + if (!int128_nonneg(a)) { + p.sign = true; + a = int128_neg(a); + } + + shift = clz64(int128_gethi(a)); + if (shift == 64) { + shift += clz64(int128_getlo(a)); + } + + p.exp = 127 - shift; + a = int128_lshift(a, shift); + + p.frac_hi = int128_gethi(a); + p.frac_lo = int128_getlo(a); + } else { + p.cls = float_class_zero; + } + + return float128_round_pack_canonical(&p, status); +} + float128 int64_to_float128(int64_t a, float_status *status) { FloatParts128 p; diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index 8e026e5..3994b72 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -183,6 +183,7 @@ floatx80 int64_to_floatx80(int64_t, float_status *status); float128 int32_to_float128(int32_t, float_status *status); float128 int64_to_float128(int64_t, float_status *status); +float128 int128_to_float128(Int128, float_status *status); float128 uint64_to_float128(uint64_t, float_status *status); float128 uint128_to_float128(Int128, float_status *status); |