diff options
Diffstat (limited to 'sysdeps/ieee754')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_nearbyint.c | 33 | ||||
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_rint.c | 33 | ||||
| -rw-r--r-- | sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c | 12 | ||||
| -rw-r--r-- | sysdeps/ieee754/dbl-64/wordsize-64/s_rint.c | 12 |
4 files changed, 6 insertions, 84 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_nearbyint.c b/sysdeps/ieee754/dbl-64/s_nearbyint.c index d780150a90..60afafdedd 100644 --- a/sysdeps/ieee754/dbl-64/s_nearbyint.c +++ b/sysdeps/ieee754/dbl-64/s_nearbyint.c @@ -38,18 +38,12 @@ double __nearbyint(double x) { fenv_t env; int32_t i0,j0,sx; - u_int32_t i,i1; double w,t; - EXTRACT_WORDS(i0,i1,x); + GET_HIGH_WORD(i0,x); sx = (i0>>31)&1; j0 = ((i0>>20)&0x7ff)-0x3ff; - if(j0<20) { + if(j0<52) { if(j0<0) { - if(((i0&0x7fffffff)|i1)==0) return x; - i1 |= (i0&0x0fffff); - i0 &= 0xfffe0000; - i0 |= ((i1|-i1)>>12)&0x80000; - SET_HIGH_WORD(x,i0); feholdexcept (&env); w = TWO52[sx]+x; t = w-TWO52[sx]; @@ -57,32 +51,11 @@ double __nearbyint(double x) GET_HIGH_WORD(i0,t); SET_HIGH_WORD(t,(i0&0x7fffffff)|(sx<<31)); return t; - } else { - i = (0x000fffff)>>j0; - if(((i0&i)|i1)==0) return x; /* x is integral */ - i>>=1; - if(((i0&i)|i1)!=0) { - if (j0==19) - i1 = 0x40000000; - else if (j0<18) - i0 = (i0&(~i))|((0x20000)>>j0); - else - { - i0 &= ~i; - i1 = 0x80000000; - } - } } - } else if (j0>51) { + } else { if(j0==0x400) return x+x; /* inf or NaN */ else return x; /* x is integral */ - } else { - i = ((u_int32_t)(0xffffffff))>>(j0-20); - if((i1&i)==0) return x; /* x is integral */ - i>>=1; - if((i1&i)!=0) i1 = (i1&(~i))|((0x40000000)>>(j0-20)); } - INSERT_WORDS(x,i0,i1); feholdexcept (&env); w = TWO52[sx]+x; t = w-TWO52[sx]; diff --git a/sysdeps/ieee754/dbl-64/s_rint.c b/sysdeps/ieee754/dbl-64/s_rint.c index c45d7848d7..8458909165 100644 --- a/sysdeps/ieee754/dbl-64/s_rint.c +++ b/sysdeps/ieee754/dbl-64/s_rint.c @@ -33,49 +33,22 @@ double __rint(double x) { int32_t i0,j0,sx; - u_int32_t i,i1; double w,t; - EXTRACT_WORDS(i0,i1,x); + GET_HIGH_WORD(i0,x); sx = (i0>>31)&1; j0 = ((i0>>20)&0x7ff)-0x3ff; - if(j0<20) { + if(j0<52) { if(j0<0) { - if(((i0&0x7fffffff)|i1)==0) return x; - i1 |= (i0&0x0fffff); - i0 &= 0xfffe0000; - i0 |= ((i1|-i1)>>12)&0x80000; - SET_HIGH_WORD(x,i0); w = TWO52[sx]+x; t = w-TWO52[sx]; GET_HIGH_WORD(i0,t); SET_HIGH_WORD(t,(i0&0x7fffffff)|(sx<<31)); return t; - } else { - i = (0x000fffff)>>j0; - if(((i0&i)|i1)==0) return x; /* x is integral */ - i>>=1; - if(((i0&i)|i1)!=0) { - if (j0==19) - i1 = 0x40000000; - else if (j0<18) - i0 = (i0&(~i))|((0x20000)>>j0); - else - { - i0 &= ~i; - i1 = 0x80000000; - } - } } - } else if (j0>51) { + } else { if(j0==0x400) return x+x; /* inf or NaN */ else return x; /* x is integral */ - } else { - i = ((u_int32_t)(0xffffffff))>>(j0-20); - if((i1&i)==0) return x; /* x is integral */ - i>>=1; - if((i1&i)!=0) i1 = (i1&(~i))|((0x40000000)>>(j0-20)); } - INSERT_WORDS(x,i0,i1); w = TWO52[sx]+x; return w-TWO52[sx]; } diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c index a3809984e2..a58a6202ef 100644 --- a/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c +++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c @@ -41,29 +41,17 @@ __nearbyint(double x) j0 = ((i0>>52)&0x7ff)-0x3ff; if(__builtin_expect(j0<52, 1)) { if(j0<0) { - if((i0&UINT64_C(0x7fffffffffffffff))==0) return x; - uint64_t i = i0 & UINT64_C(0xfffffffffffff); - i0 &= UINT64_C(0xfffe000000000000); - i0 |= (((i|-i) >> 12) & UINT64_C(0x8000000000000)); - INSERT_WORDS64(x,i0); libc_feholdexcept (&env); double w = TWO52[sx]+x; double t = w-TWO52[sx]; math_opt_barrier(t); libc_fesetenv (&env); return copysign(t, x); - } else { - uint64_t i = UINT64_C(0x000fffffffffffff)>>j0; - if((i0&i)==0) return x; /* x is integral */ - i>>=1; - if((i0&i)!=0) - i0 = (i0&(~i))|(UINT64_C(0x4000000000000)>>j0); } } else { if(j0==0x400) return x+x; /* inf or NaN */ else return x; /* x is integral */ } - INSERT_WORDS64(x,i0); libc_feholdexcept (&env); double w = TWO52[sx]+x; double t = w-TWO52[sx]; diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_rint.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_rint.c index 20eef3c5ea..87b2339d43 100644 --- a/sysdeps/ieee754/dbl-64/wordsize-64/s_rint.c +++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_rint.c @@ -38,28 +38,16 @@ __rint(double x) j0 = ((i0>>52)&0x7ff)-0x3ff; if(j0<52) { if(j0<0) { - if((i0 & UINT64_C(0x7fffffffffffffff))==0) return x; - uint64_t i = i0 & UINT64_C(0xfffffffffffff); - i0 &= UINT64_C(0xfffe000000000000); - i0 |= (((i|-i) >> 12) & UINT64_C(0x8000000000000)); - INSERT_WORDS64(x,i0); double w = TWO52[sx]+x; double t = w-TWO52[sx]; EXTRACT_WORDS64(i0,t); INSERT_WORDS64(t,(i0&UINT64_C(0x7fffffffffffffff))|(sx<<63)); return t; - } else { - uint64_t i = UINT64_C(0x000fffffffffffff)>>j0; - if((i0&i)==0) return x; /* x is integral */ - i>>=1; - if((i0&i)!=0) - i0 = (i0&(~i))|(UINT64_C(0x4000000000000)>>j0); } } else { if(j0==0x400) return x+x; /* inf or NaN */ else return x; /* x is integral */ } - INSERT_WORDS64(x,i0); double w = TWO52[sx]+x; return w-TWO52[sx]; } |