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Adjust s_floorf.c and s_floorl.c regarding code style. 

This patch just adjusts the generic implementation regarding code style.
No functional change.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Stefan Liebler 2019-12-11 15:09:26 +01:00
parent 99b39a83e7
commit d3a0409ab6
2 changed files with 90 additions and 54 deletions
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55
sysdeps/ieee754/flt-32/s_floorf.c
View File

@ -27,34 +27,45 @@
#include <math-use-builtins.h>
float
__floorf(float x)
__floorf (float x)
{
#if USE_FLOORF_BUILTIN
return __builtin_floorf (x);
#else
/* Use generic implementation. */
int32_t i0,j0;
uint32_t i;
GET_FLOAT_WORD(i0,x);
j0 = ((i0>>23)&0xff)-0x7f;
if(j0<23) {
if(j0<0) {
/* return 0*sign(x) if |x|<1 */
if(i0>=0) {i0=0;}
else if((i0&0x7fffffff)!=0)
{ i0=0xbf800000;}
} else {
i = (0x007fffff)>>j0;
if((i0&i)==0) return x; /* x is integral */
if(i0<0) i0 += (0x00800000)>>j0;
i0 &= (~i);
}
} else {
if(__builtin_expect(j0==0x80, 0)) return x+x; /* inf or NaN */
else return x; /* x is integral */
int32_t i0, j0;
uint32_t i;
GET_FLOAT_WORD (i0, x);
j0 = ((i0 >> 23) & 0xff) - 0x7f;
if (j0 < 23)
{
if (j0 < 0)
{
/* return 0 * sign (x) if |x| < 1 */
if (i0 >= 0)
i0 = 0;
else if ((i0 & 0x7fffffff) != 0)
i0 = 0xbf800000;
}
SET_FLOAT_WORD(x,i0);
return x;
else
{
i = (0x007fffff) >> j0;
if ((i0 & i) == 0)
return x; /* x is integral */
if (i0 < 0)
i0 += (0x00800000) >> j0;
i0 &= (~i);
}
}
else
{
if (__glibc_unlikely (j0 == 0x80))
return x + x; /* inf or NaN */
else
return x; /* x is integral */
}
SET_FLOAT_WORD (x, i0);
return x;
#endif /* ! USE_FLOORF_BUILTIN */
}
#ifndef __floorf

89
sysdeps/ieee754/ldbl-128/s_floorl.c
View File

@ -30,46 +30,71 @@ static char rcsid[] = "$NetBSD: $";
#include <libm-alias-ldouble.h>
#include <math-use-builtins.h>
_Float128 __floorl(_Float128 x)
_Float128
__floorl (_Float128 x)
{
#if USE_FLOORL_BUILTIN
return __builtin_floorl (x);
#else
/* Use generic implementation. */
int64_t i0,i1,j0;
uint64_t i,j;
GET_LDOUBLE_WORDS64(i0,i1,x);
j0 = ((i0>>48)&0x7fff)-0x3fff;
if(j0<48) {
if(j0<0) {
/* return 0*sign(x) if |x|<1 */
if(i0>=0) {i0=i1=0;}
else if(((i0&0x7fffffffffffffffLL)|i1)!=0)
{ i0=0xbfff000000000000ULL;i1=0;}
} else {
i = (0x0000ffffffffffffULL)>>j0;
if(((i0&i)|i1)==0) return x; /* x is integral */
if(i0<0) i0 += (0x0001000000000000LL)>>j0;
i0 &= (~i); i1=0;
int64_t i0, i1, j0;
uint64_t i, j;
GET_LDOUBLE_WORDS64 (i0, i1, x);
j0 = ((i0 >> 48) & 0x7fff) - 0x3fff;
if (j0 < 48)
{
if (j0 < 0)
{
/* return 0 * sign (x) if |x| < 1 */
if (i0 >= 0)
{
i0 = i1 = 0;
}
} else if (j0>111) {
if(j0==0x4000) return x+x; /* inf or NaN */
else return x; /* x is integral */
} else {
i = -1ULL>>(j0-48);
if((i1&i)==0) return x; /* x is integral */
if(i0<0) {
if(j0==48) i0+=1;
else {
j = i1+(1LL<<(112-j0));
if(j<i1) i0 +=1 ; /* got a carry */
i1=j;
}
else if (((i0 & 0x7fffffffffffffffLL) | i1) != 0)
{
i0 = 0xbfff000000000000ULL;
i1 = 0;
}
i1 &= (~i);
}
SET_LDOUBLE_WORDS64(x,i0,i1);
return x;
else
{
i = (0x0000ffffffffffffULL) >> j0;
if (((i0 & i) | i1) == 0)
return x; /* x is integral */
if (i0 < 0)
i0 += (0x0001000000000000LL) >> j0;
i0 &= (~i);
i1 = 0;
}
}
else if (j0 > 111)
{
if (j0 == 0x4000)
return x + x; /* inf or NaN */
else
return x; /* x is integral */
}
else
{
i = -1ULL >> (j0 - 48);
if ((i1 & i) == 0)
return x; /* x is integral */
if (i0 < 0)
{
if (j0 == 48)
i0 += 1;
else
{
j = i1 + (1LL << (112 - j0));
if (j < i1)
i0 += 1 ; /* got a carry */
i1 = j;
}
}
i1 &= (~i);
}
SET_LDOUBLE_WORDS64 (x, i0, i1);
return x;
#endif /* ! USE_FLOORL_BUILTIN */
}
libm_alias_ldouble (__floor, floor)