diff options
Diffstat (limited to 'libgcc/soft-fp/floatbitintsd.c')
| -rw-r--r-- | libgcc/soft-fp/floatbitintsd.c | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/libgcc/soft-fp/floatbitintsd.c b/libgcc/soft-fp/floatbitintsd.c index 4901aa8..915f46c 100644 --- a/libgcc/soft-fp/floatbitintsd.c +++ b/libgcc/soft-fp/floatbitintsd.c @@ -1,7 +1,7 @@ /* Software floating-point emulation. Convert a _BitInt to _Decimal32. - Copyright (C) 2023 Free Software Foundation, Inc. + Copyright (C) 2023-2025 Free Software Foundation, Inc. This file is part of GCC. @@ -28,6 +28,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #include "bitint.h" #ifdef __BITINT_MAXWIDTH__ +#ifndef ENABLE_DECIMAL_BID_FORMAT +#define __bid_floatbitintsd __dpd_floatbitintsd +#endif extern _Decimal32 __bid_floatbitintsd (const UBILtype *, SItype); _Decimal32 @@ -51,7 +54,11 @@ __bid_floatbitintsd (const UBILtype *i, SItype iprec) } if (iprec < 0) { - SItype n = sizeof (0ULL) * __CHAR_BIT__ + 1 - __builtin_clzll (~msb); + SItype n; + if (msb == ~(UBILtype) 0) + n = 1; + else + n = sizeof (0ULL) * __CHAR_BIT__ + 1 - __builtin_clzll (~msb); aiprec = (in - 1) * BIL_TYPE_SIZE + n; } else if (msb == 0) @@ -117,7 +124,8 @@ __bid_floatbitintsd (const UBILtype *i, SItype iprec) } else { - __builtin_memcpy (buf + BITINT_END (q_limbs - in + 1, 0), i, + __builtin_memcpy (buf + BITINT_END (q_limbs - in + 1, 0), + i + BITINT_END (1, 0), (in - 1) * sizeof (UBILtype)); buf[BITINT_END (q_limbs - in, in - 1)] = msb; if (iprec < 0) @@ -210,6 +218,7 @@ __bid_floatbitintsd (const UBILtype *i, SItype iprec) } exponent += 101; +#ifdef ENABLE_DECIMAL_BID_FORMAT if (mantissa >= (USItype) 0x800000) u.u = (((((iprec < 0) << 2) | (USItype) 3) << 29) | (((USItype) exponent) << 21) @@ -218,10 +227,34 @@ __bid_floatbitintsd (const UBILtype *i, SItype iprec) u.u = ((((USItype) (iprec < 0)) << 31) | (((USItype) exponent) << 23) | mantissa); +#else + u.u = mantissa; + mantissa = __dpd_b2dbitint[u.u % 1000]; + u.u /= 1000; + mantissa |= ((USItype) __dpd_b2dbitint[u.u % 1000]) << 10; + u.u /= 1000; + if (u.u >= 8) + u.u = (((((iprec < 0) << 2) | (USItype) 3) << 29) + | (((USItype) exponent & (3 << 6)) << 21) + | ((u.u & 1) << 26) + | (((USItype) exponent & 63) << 20) + | mantissa); + else + u.u = ((((USItype) (iprec < 0)) << 31) + | (((USItype) exponent & (3 << 6)) << 23) + | (u.u << 26) + | (((USItype) exponent & 63) << 20) + | mantissa); +#endif if (inexact) { ui.u = ((((USItype) (iprec < 0)) << 31) +#ifdef ENABLE_DECIMAL_BID_FORMAT | (((USItype) (exponent - 1)) << 23) +#else + | (((USItype) (exponent - 1) & (3 << 6)) << 23) + | (((USItype) (exponent - 1) & 63) << 20) +#endif | (inexact + 3)); __asm ("" : "+g" (u.d)); __asm ("" : "+g" (ui.d)); |