diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c b/sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c index bcdb23b..161172d 100644 --- a/sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c +++ b/sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c @@ -41,11 +41,15 @@ long double __scalbnl (long double x, int n) { int64_t k,l,hx,lx; union { int64_t i; double d; } u; - GET_LDOUBLE_WORDS64(hx,lx,x); + double xhi, xlo; + + ldbl_unpack (x, &xhi, &xlo); + EXTRACT_WORDS64 (hx, xhi); + EXTRACT_WORDS64 (lx, xlo); k = (hx>>52)&0x7ff; /* extract exponent */ l = (lx>>52)&0x7ff; if (k==0) { /* 0 or subnormal x */ - if (((hx|lx)&0x7fffffffffffffffULL)==0) return x; /* +-0 */ + if ((hx&0x7fffffffffffffffULL)==0) return x; /* +-0 */ u.i = hx; u.d *= two54; hx = u.i; @@ -61,7 +65,9 @@ long double __scalbnl (long double x, int n) if (k > 0) { /* normal result */ hx = (hx&0x800fffffffffffffULL)|(k<<52); if ((lx & 0x7fffffffffffffffULL) == 0) { /* low part +-0 */ - SET_LDOUBLE_WORDS64(x,hx,lx); + INSERT_WORDS64 (xhi, hx); + INSERT_WORDS64 (xlo, lx); + x = ldbl_pack (xhi, xlo); return x; } if (l == 0) { /* low part subnormal */ @@ -81,14 +87,19 @@ long double __scalbnl (long double x, int n) u.d *= twom54; lx = u.i; } - SET_LDOUBLE_WORDS64(x,hx,lx); + INSERT_WORDS64 (xhi, hx); + INSERT_WORDS64 (xlo, lx); + x = ldbl_pack (xhi, xlo); return x; } if (k <= -54) return tiny*__copysignl(tiny,x); /*underflow*/ k += 54; /* subnormal result */ lx &= 0x8000000000000000ULL; - SET_LDOUBLE_WORDS64(x,(hx&0x800fffffffffffffULL)|(k<<52),lx); + hx &= 0x800fffffffffffffULL; + INSERT_WORDS64 (xhi, hx|(k<<52)); + INSERT_WORDS64 (xlo, lx); + x = ldbl_pack (xhi, xlo); return x*twolm54; } #ifdef IS_IN_libm |