diff options
Diffstat (limited to 'include/fpu/softfloat-macros.h')
| -rw-r--r-- | include/fpu/softfloat-macros.h | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/include/fpu/softfloat-macros.h b/include/fpu/softfloat-macros.h index edc682139e..a1d99c730d 100644 --- a/include/fpu/softfloat-macros.h +++ b/include/fpu/softfloat-macros.h @@ -329,15 +329,30 @@ static inline void | pieces which are stored at the locations pointed to by `z0Ptr' and `z1Ptr'. *----------------------------------------------------------------------------*/ -static inline void - shortShift128Left( - uint64_t a0, uint64_t a1, int count, uint64_t *z0Ptr, uint64_t *z1Ptr) +static inline void shortShift128Left(uint64_t a0, uint64_t a1, int count, + uint64_t *z0Ptr, uint64_t *z1Ptr) { + *z1Ptr = a1 << count; + *z0Ptr = count == 0 ? a0 : (a0 << count) | (a1 >> (-count & 63)); +} - *z1Ptr = a1<<count; - *z0Ptr = - ( count == 0 ) ? a0 : ( a0<<count ) | ( a1>>( ( - count ) & 63 ) ); +/*---------------------------------------------------------------------------- +| Shifts the 128-bit value formed by concatenating `a0' and `a1' left by the +| number of bits given in `count'. Any bits shifted off are lost. The value +| of `count' may be greater than 64. The result is broken into two 64-bit +| pieces which are stored at the locations pointed to by `z0Ptr' and `z1Ptr'. +*----------------------------------------------------------------------------*/ +static inline void shift128Left(uint64_t a0, uint64_t a1, int count, + uint64_t *z0Ptr, uint64_t *z1Ptr) +{ + if (count < 64) { + *z1Ptr = a1 << count; + *z0Ptr = count == 0 ? a0 : (a0 << count) | (a1 >> (-count & 63)); + } else { + *z1Ptr = 0; + *z0Ptr = a1 << (count - 64); + } } /*---------------------------------------------------------------------------- @@ -619,7 +634,8 @@ static inline uint64_t estimateDiv128To64(uint64_t a0, uint64_t a1, uint64_t b) * * Licensed under the GPLv2/LGPLv3 */ -static inline uint64_t div128To64(uint64_t n0, uint64_t n1, uint64_t d) +static inline uint64_t udiv_qrnnd(uint64_t *r, uint64_t n1, + uint64_t n0, uint64_t d) { uint64_t d0, d1, q0, q1, r1, r0, m; @@ -658,8 +674,8 @@ static inline uint64_t div128To64(uint64_t n0, uint64_t n1, uint64_t d) } r0 -= m; - /* Return remainder in LSB */ - return (q1 << 32) | q0 | (r0 != 0); + *r = r0; + return (q1 << 32) | q0; } /*---------------------------------------------------------------------------- |