diff options
Diffstat (limited to 'libm/s_floor.c')
| -rw-r--r-- | libm/s_floor.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/libm/s_floor.c b/libm/s_floor.c index 91f1879be..21d9821e4 100644 --- a/libm/s_floor.c +++ b/libm/s_floor.c @@ -28,36 +28,36 @@ static const double huge = 1.0e300; double floor(double x) { - int32_t i0,i1,j0; + int32_t i0,i1,_j0; u_int32_t i,j; EXTRACT_WORDS(i0,i1,x); - j0 = ((i0>>20)&0x7ff)-0x3ff; - if(j0<20) { - if(j0<0) { /* raise inexact if x != 0 */ + _j0 = ((i0>>20)&0x7ff)-0x3ff; + if(_j0<20) { + if(_j0<0) { /* raise inexact if x != 0 */ if(huge+x>0.0) {/* return 0*sign(x) if |x|<1 */ if(i0>=0) {i0=i1=0;} else if(((i0&0x7fffffff)|i1)!=0) { i0=0xbff00000;i1=0;} } } else { - i = (0x000fffff)>>j0; + i = (0x000fffff)>>_j0; if(((i0&i)|i1)==0) return x; /* x is integral */ if(huge+x>0.0) { /* raise inexact flag */ - if(i0<0) i0 += (0x00100000)>>j0; + if(i0<0) i0 += (0x00100000)>>_j0; i0 &= (~i); i1=0; } } - } else if (j0>51) { - if(j0==0x400) return x+x; /* inf or NaN */ + } else if (_j0>51) { + if(_j0==0x400) return x+x; /* inf or NaN */ else return x; /* x is integral */ } else { - i = ((u_int32_t)(0xffffffff))>>(j0-20); + i = ((u_int32_t)(0xffffffff))>>(_j0-20); if((i1&i)==0) return x; /* x is integral */ if(huge+x>0.0) { /* raise inexact flag */ if(i0<0) { - if(j0==20) i0+=1; + if(_j0==20) i0+=1; else { - j = i1+(1<<(52-j0)); + j = i1+(1<<(52-_j0)); if(j<i1) i0 +=1 ; /* got a carry */ i1=j; } |