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Use math_narrow_eval more consistently.

Browse Source 
Where glibc code needs to avoid excess range and precision in
floating-point arithmetic, code variously uses either asms or volatile
to force the results of that arithmetic to memory; mostly this is
conditional on FLT_EVAL_METHOD, but in the case of lrint / llrint
functions some use of volatile is unconditional (and is present
unnecessarily in versions for long double).  This patch make such code
use the recently-added math_narrow_eval macro consistently, removing
the unnecessary uses of volatile in long double lrint / llrint
implementations completely.

Tested for x86_64, x86, mips64 and powerpc.

	* math/s_nexttowardf.c (__nexttowardf): Use math_narrow_eval.
	* stdlib/strtod_l.c: Include <math_private.h>.
	(overflow_value): Use math_narrow_eval.
	(underflow_value): Likewise.
	* sysdeps/i386/fpu/s_nexttoward.c (__nexttoward): Likewise.
	* sysdeps/i386/fpu/s_nexttowardf.c (__nexttowardf): Likewise.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c (gamma_positive): Likewise.
	(__ieee754_gamma_r): Likewise.
	* sysdeps/ieee754/dbl-64/gamma_productf.c (__gamma_productf):
	Likewise.
	* sysdeps/ieee754/dbl-64/k_rem_pio2.c (__kernel_rem_pio2):
	Likewise.
	* sysdeps/ieee754/dbl-64/lgamma_neg.c (__lgamma_neg): Likewise.
	* sysdeps/ieee754/dbl-64/s_erf.c (__erfc): Likewise.
	* sysdeps/ieee754/dbl-64/s_llrint.c (__llrint): Likewise.
	* sysdeps/ieee754/dbl-64/s_lrint.c (__lrint): Likewise.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c (gammaf_positive): Likewise.
	(__ieee754_gammaf_r): Likewise.
	* sysdeps/ieee754/flt-32/k_rem_pio2f.c (__kernel_rem_pio2f):
	Likewise.
	* sysdeps/ieee754/flt-32/lgamma_negf.c (__lgamma_negf): Likewise.
	* sysdeps/ieee754/flt-32/s_erff.c (__erfcf): Likewise.
	* sysdeps/ieee754/flt-32/s_llrintf.c (__llrintf): Likewise.
	* sysdeps/ieee754/flt-32/s_lrintf.c (__lrintf): Likewise.
	* sysdeps/ieee754/ldbl-128/s_llrintl.c (__llrintl): Do not use
	volatile.
	* sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttoward.c (__nexttoward): Use
	math_narrow_eval.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c (__nexttoward):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-96/gamma_product.c (__gamma_product):
	Likewise.
	* sysdeps/ieee754/ldbl-96/s_llrintl.c (__llrintl): Do not use
	volatile.
	* sysdeps/ieee754/ldbl-96/s_lrintl.c (__lrintl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttoward.c (__nexttoward): Use
	math_narrow_eval.
	* sysdeps/ieee754/ldbl-96/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c (__nldbl_nexttowardf):
	Likewise.
This commit is contained in:
Joseph Myers 2015-09-23 18:14:57 +00:00
parent 5df386a549
commit 54142c44e9
29 changed files with 109 additions and 158 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
ChangeLog
View File

@ -1,3 +1,50 @@
2015-09-23 Joseph Myers <joseph@codesourcery.com>
* math/s_nexttowardf.c (__nexttowardf): Use math_narrow_eval.
* stdlib/strtod_l.c: Include <math_private.h>.
(overflow_value): Use math_narrow_eval.
(underflow_value): Likewise.
* sysdeps/i386/fpu/s_nexttoward.c (__nexttoward): Likewise.
* sysdeps/i386/fpu/s_nexttowardf.c (__nexttowardf): Likewise.
* sysdeps/ieee754/dbl-64/e_gamma_r.c (gamma_positive): Likewise.
(__ieee754_gamma_r): Likewise.
* sysdeps/ieee754/dbl-64/gamma_productf.c (__gamma_productf):
Likewise.
* sysdeps/ieee754/dbl-64/k_rem_pio2.c (__kernel_rem_pio2):
Likewise.
* sysdeps/ieee754/dbl-64/lgamma_neg.c (__lgamma_neg): Likewise.
* sysdeps/ieee754/dbl-64/s_erf.c (__erfc): Likewise.
* sysdeps/ieee754/dbl-64/s_llrint.c (__llrint): Likewise.
* sysdeps/ieee754/dbl-64/s_lrint.c (__lrint): Likewise.
* sysdeps/ieee754/flt-32/e_gammaf_r.c (gammaf_positive): Likewise.
(__ieee754_gammaf_r): Likewise.
* sysdeps/ieee754/flt-32/k_rem_pio2f.c (__kernel_rem_pio2f):
Likewise.
* sysdeps/ieee754/flt-32/lgamma_negf.c (__lgamma_negf): Likewise.
* sysdeps/ieee754/flt-32/s_erff.c (__erfcf): Likewise.
* sysdeps/ieee754/flt-32/s_llrintf.c (__llrintf): Likewise.
* sysdeps/ieee754/flt-32/s_lrintf.c (__lrintf): Likewise.
* sysdeps/ieee754/ldbl-128/s_llrintl.c (__llrintl): Do not use
volatile.
* sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl): Likewise.
* sysdeps/ieee754/ldbl-128/s_nexttoward.c (__nexttoward): Use
math_narrow_eval.
* sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c (__nexttoward):
Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c (__nexttowardf):
Likewise.
* sysdeps/ieee754/ldbl-96/gamma_product.c (__gamma_product):
Likewise.
* sysdeps/ieee754/ldbl-96/s_llrintl.c (__llrintl): Do not use
volatile.
* sysdeps/ieee754/ldbl-96/s_lrintl.c (__lrintl): Likewise.
* sysdeps/ieee754/ldbl-96/s_nexttoward.c (__nexttoward): Use
math_narrow_eval.
* sysdeps/ieee754/ldbl-96/s_nexttowardf.c (__nexttowardf):
Likewise.
* sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c (__nldbl_nexttowardf):
Likewise.
2015-09-22 H.J. Lu <hongjiu.lu@intel.com>
* nptl/Versions: Remove ignored symbols.

5
math/s_nexttowardf.c
View File

@ -59,10 +59,7 @@ float __nexttowardf(float x, long double y)
}
hy = hx&0x7f800000;
if(hy>=0x7f800000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0)
/* Force conversion to float. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00800000) {

13
stdlib/strtod_l.c
View File

@ -57,6 +57,7 @@ extern unsigned long long int ____strtoull_l_internal (const char *, char **,
#include "../locale/localeinfo.h"
#include <locale.h>
#include <math.h>
#include <math_private.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
@ -181,10 +182,8 @@ static FLOAT
overflow_value (int negative)
{
__set_errno (ERANGE);
#if FLT_EVAL_METHOD != 0
volatile
#endif
FLOAT result = (negative ? -MAX_VALUE : MAX_VALUE) * MAX_VALUE;
FLOAT result = math_narrow_eval ((negative ? -MAX_VALUE : MAX_VALUE)
* MAX_VALUE);
return result;
}
@ -195,10 +194,8 @@ static FLOAT
underflow_value (int negative)
{
__set_errno (ERANGE);
#if FLT_EVAL_METHOD != 0
volatile
#endif
FLOAT result = (negative ? -MIN_VALUE : MIN_VALUE) * MIN_VALUE;
FLOAT result = math_narrow_eval ((negative ? -MIN_VALUE : MIN_VALUE)
* MIN_VALUE);
return result;
}

5
sysdeps/i386/fpu/s_nexttoward.c
View File

@ -73,10 +73,7 @@ double __nexttoward(double x, long double y)
}
hy = hx&0x7ff00000;
if(hy>=0x7ff00000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0 && FLT_EVAL_METHOD != 1)
/* Force conversion to double. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00100000) {

5
sysdeps/i386/fpu/s_nexttowardf.c
View File

@ -61,10 +61,7 @@ float __nexttowardf(float x, long double y)
}
hy = hx&0x7f800000;
if(hy>=0x7f800000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0)
/* Force conversion to float. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00800000) {

20
sysdeps/ieee754/dbl-64/e_gamma_r.c
View File

@ -76,11 +76,7 @@ gamma_positive (double x, int *exp2_adj)
/* Adjust into the range for applying Stirling's
approximation. */
double n = __ceil (12.0 - x);
#if FLT_EVAL_METHOD != 0
volatile
#endif
double x_tmp = x + n;
x_adj = x_tmp;
x_adj = math_narrow_eval (x + n);
x_eps = (x - (x_adj - n));
prod = __gamma_product (x_adj - n, x_eps, n, &eps);
}
@ -119,9 +115,6 @@ __ieee754_gamma_r (double x, int *signgamp)
{
int32_t hx;
u_int32_t lx;
#if FLT_EVAL_METHOD != 0
volatile
#endif
double ret;
EXTRACT_WORDS (hx, lx, x);
@ -157,7 +150,7 @@ __ieee754_gamma_r (double x, int *signgamp)
{
/* Overflow. */
*signgamp = 0;
ret = DBL_MAX * DBL_MAX;
ret = math_narrow_eval (DBL_MAX * DBL_MAX);
return ret;
}
else
@ -201,27 +194,28 @@ __ieee754_gamma_r (double x, int *signgamp)
}
}
}
ret = math_narrow_eval (ret);
}
if (isinf (ret) && x != 0)
{
if (*signgamp < 0)
{
ret = -__copysign (DBL_MAX, ret) * DBL_MAX;
ret = math_narrow_eval (-__copysign (DBL_MAX, ret) * DBL_MAX);
ret = -ret;
}
else
ret = __copysign (DBL_MAX, ret) * DBL_MAX;
ret = math_narrow_eval (__copysign (DBL_MAX, ret) * DBL_MAX);
return ret;
}
else if (ret == 0)
{
if (*signgamp < 0)
{
ret = -__copysign (DBL_MIN, ret) * DBL_MIN;
ret = math_narrow_eval (-__copysign (DBL_MIN, ret) * DBL_MIN);
ret = -ret;
}
else
ret = __copysign (DBL_MIN, ret) * DBL_MIN;
ret = math_narrow_eval (__copysign (DBL_MIN, ret) * DBL_MIN);
return ret;
}
else

5
sysdeps/ieee754/dbl-64/gamma_productf.c
View File

@ -36,10 +36,7 @@ __gamma_productf (float x, float x_eps, int n, float *eps)
for (int i = 1; i < n; i++)
ret *= x_full + i;
#if FLT_EVAL_METHOD != 0
volatile
#endif
float fret = ret;
float fret = math_narrow_eval ((float) ret);
*eps = (ret - fret) / fret;
return fret;

19
sysdeps/ieee754/dbl-64/k_rem_pio2.c
View File

@ -315,34 +315,25 @@ recompute:
break;
case 1:
case 2:;
#if __FLT_EVAL_METHOD__ != 0
volatile
#endif
double fv = 0.0;
for (i = jz; i >= 0; i--)
fv += fq[i];
fv = math_narrow_eval (fv + fq[i]);
y[0] = (ih == 0) ? fv : -fv;
fv = fq[0] - fv;
fv = math_narrow_eval (fq[0] - fv);
for (i = 1; i <= jz; i++)
fv += fq[i];
fv = math_narrow_eval (fv + fq[i]);
y[1] = (ih == 0) ? fv : -fv;
break;
case 3: /* painful */
for (i = jz; i > 0; i--)
{
#if __FLT_EVAL_METHOD__ != 0
volatile
#endif
double fv = (double) (fq[i - 1] + fq[i]);
double fv = math_narrow_eval (fq[i - 1] + fq[i]);
fq[i] += fq[i - 1] - fv;
fq[i - 1] = fv;
}
for (i = jz; i > 1; i--)
{
#if __FLT_EVAL_METHOD__ != 0
volatile
#endif
double fv = (double) (fq[i - 1] + fq[i]);
double fv = math_narrow_eval (fq[i - 1] + fq[i]);
fq[i] += fq[i - 1] - fv;
fq[i - 1] = fv;
}

24
sysdeps/ieee754/dbl-64/lgamma_neg.c
View File

@ -330,17 +330,9 @@ __lgamma_neg (double x, int *signgamp)
}
double log_gamma_ratio;
#if FLT_EVAL_METHOD != 0
volatile
#endif
double y0_tmp = 1 - x0_hi;
double y0 = y0_tmp;
double y0 = math_narrow_eval (1 - x0_hi);
double y0_eps = -x0_hi + (1 - y0) - x0_lo;
#if FLT_EVAL_METHOD != 0
volatile
#endif
double y_tmp = 1 - x;
double y = y_tmp;
double y = math_narrow_eval (1 - x);
double y_eps = -x + (1 - y);
/* We now wish to compute LOG_GAMMA_RATIO
= log (gamma (Y0 + Y0_EPS) / gamma (Y + Y_EPS)). XDIFF
@ -353,19 +345,11 @@ __lgamma_neg (double x, int *signgamp)
{
int n_up = (7 - i) / 2;
double ny0, ny0_eps, ny, ny_eps;
#if FLT_EVAL_METHOD != 0
volatile
#endif
double y0_tmp = y0 + n_up;
ny0 = y0_tmp;
ny0 = math_narrow_eval (y0 + n_up);
ny0_eps = y0 - (ny0 - n_up) + y0_eps;
y0 = ny0;
y0_eps = ny0_eps;
#if FLT_EVAL_METHOD != 0
volatile
#endif
double y_tmp = y + n_up;
ny = y_tmp;
ny = math_narrow_eval (y + n_up);
ny_eps = y - (ny - n_up) + y_eps;
y = ny;
y_eps = ny_eps;

5
sysdeps/ieee754/dbl-64/s_erf.c
View File

@ -402,10 +402,7 @@ __erfc (double x)
__ieee754_exp ((z - x) * (z + x) + R / S);
if (hx > 0)
{
#if FLT_EVAL_METHOD != 0
volatile
#endif
double ret = r / x;
double ret = math_narrow_eval (r / x);
if (ret == 0)
__set_errno (ERANGE);
return ret;

6
sysdeps/ieee754/dbl-64/s_llrint.c
View File

@ -35,7 +35,7 @@ __llrint (double x)
int32_t j0;
u_int32_t i1, i0;
long long int result;
volatile double w;
double w;
double t;
int sx;
@ -47,7 +47,7 @@ __llrint (double x)
if (j0 < 20)
{
w = two52[sx] + x;
w = math_narrow_eval (two52[sx] + x);
t = w - two52[sx];
EXTRACT_WORDS (i0, i1, t);
j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
@ -62,7 +62,7 @@ __llrint (double x)
result = (((long long int) i0 << 32) | i1) << (j0 - 52);
else
{
w = two52[sx] + x;
w = math_narrow_eval (two52[sx] + x);
t = w - two52[sx];
EXTRACT_WORDS (i0, i1, t);
j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;

6
sysdeps/ieee754/dbl-64/s_lrint.c
View File

@ -34,7 +34,7 @@ __lrint (double x)
{
int32_t j0;
u_int32_t i0, i1;
volatile double w;
double w;
double t;
long int result;
int sx;
@ -47,7 +47,7 @@ __lrint (double x)
if (j0 < 20)
{
w = two52[sx] + x;
w = math_narrow_eval (two52[sx] + x);
t = w - two52[sx];
EXTRACT_WORDS (i0, i1, t);
j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
@ -62,7 +62,7 @@ __lrint (double x)
result = ((long int) i0 << (j0 - 20)) | (i1 << (j0 - 52));
else
{
w = two52[sx] + x;
w = math_narrow_eval (two52[sx] + x);
t = w - two52[sx];
EXTRACT_WORDS (i0, i1, t);
j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;

20
sysdeps/ieee754/flt-32/e_gammaf_r.c
View File

@ -69,11 +69,7 @@ gammaf_positive (float x, int *exp2_adj)
/* Adjust into the range for applying Stirling's
approximation. */
float n = __ceilf (4.0f - x);
#if FLT_EVAL_METHOD != 0
volatile
#endif
float x_tmp = x + n;
x_adj = x_tmp;
x_adj = math_narrow_eval (x + n);
x_eps = (x - (x_adj - n));
prod = __gamma_productf (x_adj - n, x_eps, n, &eps);
}
@ -111,9 +107,6 @@ float
__ieee754_gammaf_r (float x, int *signgamp)
{
int32_t hx;
#if FLT_EVAL_METHOD != 0
volatile
#endif
float ret;
GET_FLOAT_WORD (hx, x);
@ -149,7 +142,7 @@ __ieee754_gammaf_r (float x, int *signgamp)
{
/* Overflow. */
*signgamp = 0;
ret = FLT_MAX * FLT_MAX;
ret = math_narrow_eval (FLT_MAX * FLT_MAX);
return ret;
}
else
@ -193,27 +186,28 @@ __ieee754_gammaf_r (float x, int *signgamp)
}
}
}
ret = math_narrow_eval (ret);
}
if (isinf (ret) && x != 0)
{
if (*signgamp < 0)
{
ret = -__copysignf (FLT_MAX, ret) * FLT_MAX;
ret = math_narrow_eval (-__copysignf (FLT_MAX, ret) * FLT_MAX);
ret = -ret;
}
else
ret = __copysignf (FLT_MAX, ret) * FLT_MAX;
ret = math_narrow_eval (__copysignf (FLT_MAX, ret) * FLT_MAX);
return ret;
}
else if (ret == 0)
{
if (*signgamp < 0)
{
ret = -__copysignf (FLT_MIN, ret) * FLT_MIN;
ret = math_narrow_eval (-__copysignf (FLT_MIN, ret) * FLT_MIN);
ret = -ret;
}
else
ret = __copysignf (FLT_MIN, ret) * FLT_MIN;
ret = math_narrow_eval (__copysignf (FLT_MIN, ret) * FLT_MIN);
return ret;
}
else

19
sysdeps/ieee754/flt-32/k_rem_pio2f.c
View File

@ -167,30 +167,21 @@ recompute:
break;
case 1:
case 2:;
#if __FLT_EVAL_METHOD__ != 0
volatile
#endif
float fv = 0.0;
for (i=jz;i>=0;i--) fv += fq[i];
for (i=jz;i>=0;i--) fv = math_narrow_eval (fv + fq[i]);
y[0] = (ih==0)? fv: -fv;
fv = fq[0]-fv;
for (i=1;i<=jz;i++) fv += fq[i];
fv = math_narrow_eval (fq[0]-fv);
for (i=1;i<=jz;i++) fv = math_narrow_eval (fv + fq[i]);
y[1] = (ih==0)? fv: -fv;
break;
case 3: /* painful */
for (i=jz;i>0;i--) {
#if __FLT_EVAL_METHOD__ != 0
volatile
#endif
float fv = fq[i-1]+fq[i];
float fv = math_narrow_eval (fq[i-1]+fq[i]);
fq[i] += fq[i-1]-fv;
fq[i-1] = fv;
}
for (i=jz;i>1;i--) {
#if __FLT_EVAL_METHOD__ != 0
volatile
#endif
float fv = fq[i-1]+fq[i];
float fv = math_narrow_eval (fq[i-1]+fq[i]);
fq[i] += fq[i-1]-fv;
fq[i-1] = fv;
}

12
sysdeps/ieee754/flt-32/lgamma_negf.c
View File

@ -245,17 +245,9 @@ __lgamma_negf (float x, int *signgamp)
}
float log_gamma_ratio;
#if FLT_EVAL_METHOD != 0
volatile
#endif
float y0_tmp = 1 - x0_hi;
float y0 = y0_tmp;
float y0 = math_narrow_eval (1 - x0_hi);
float y0_eps = -x0_hi + (1 - y0) - x0_lo;
#if FLT_EVAL_METHOD != 0
volatile
#endif
float y_tmp = 1 - x;
float y = y_tmp;
float y = math_narrow_eval (1 - x);
float y_eps = -x + (1 - y);
/* We now wish to compute LOG_GAMMA_RATIO
= log (gamma (Y0 + Y0_EPS) / gamma (Y + Y_EPS)). XDIFF

5
sysdeps/ieee754/flt-32/s_erff.c
View File

@ -213,10 +213,7 @@ float __erfcf(float x)
r = __ieee754_expf(-z*z-(float)0.5625)*
__ieee754_expf((z-x)*(z+x)+R/S);
if(hx>0) {
#if FLT_EVAL_METHOD != 0
volatile
#endif
float ret = r/x;
float ret = math_narrow_eval (r/x);
if (ret == 0)
__set_errno (ERANGE);
return ret;

4
sysdeps/ieee754/flt-32/s_llrintf.c
View File

@ -34,7 +34,7 @@ __llrintf (float x)
{
int32_t j0;
u_int32_t i0;
volatile float w;
float w;
float t;
long long int result;
int sx;
@ -52,7 +52,7 @@ __llrintf (float x)
result = (long long int) i0 << (j0 - 23);
else
{
w = two23[sx] + x;
w = math_narrow_eval (two23[sx] + x);
t = w - two23[sx];
GET_FLOAT_WORD (i0, t);
j0 = ((i0 >> 23) & 0xff) - 0x7f;

4
sysdeps/ieee754/flt-32/s_lrintf.c
View File

@ -34,7 +34,7 @@ __lrintf (float x)
{
int32_t j0;
u_int32_t i0;
volatile float w;
float w;
float t;
long int result;
int sx;
@ -52,7 +52,7 @@ __lrintf (float x)
result = (long int) i0 << (j0 - 23);
else
{
w = two23[sx] + x;
w = math_narrow_eval (two23[sx] + x);
t = w - two23[sx];
GET_FLOAT_WORD (i0, t);
j0 = ((i0 >> 23) & 0xff) - 0x7f;

2
sysdeps/ieee754/ldbl-128/s_llrintl.c
View File

@ -34,7 +34,7 @@ __llrintl (long double x)
{
int32_t j0;
u_int64_t i0,i1;
volatile long double w;
long double w;
long double t;
long long int result;
int sx;

2
sysdeps/ieee754/ldbl-128/s_lrintl.c
View File

@ -34,7 +34,7 @@ __lrintl (long double x)
{
int32_t j0;
u_int64_t i0,i1;
volatile long double w;
long double w;
long double t;
long int result;
int sx;

5
sysdeps/ieee754/ldbl-128/s_nexttoward.c
View File

@ -73,10 +73,7 @@ double __nexttoward(double x, long double y)
}
hy = hx&0x7ff00000;
if(hy>=0x7ff00000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0 && FLT_EVAL_METHOD != 1)
/* Force conversion to double. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00100000) {

5
sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c
View File

@ -74,10 +74,7 @@ double __nexttoward(double x, long double y)
}
hy = hx&0x7ff00000;
if(hy>=0x7ff00000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0 && FLT_EVAL_METHOD != 1)
/* Force conversion to double. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00100000) {

5
sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c
View File

@ -63,10 +63,7 @@ float __nexttowardf(float x, long double y)
}
hy = hx&0x7f800000;
if(hy>=0x7f800000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0)
/* Force conversion to float. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00800000) { /* underflow */

5
sysdeps/ieee754/ldbl-96/gamma_product.c
View File

@ -36,10 +36,7 @@ __gamma_product (double x, double x_eps, int n, double *eps)
for (int i = 1; i < n; i++)
ret *= x_full + i;
#if FLT_EVAL_METHOD != 0
volatile
#endif
double fret = ret;
double fret = math_narrow_eval ((double) ret);
*eps = (ret - fret) / fret;
return fret;

2
sysdeps/ieee754/ldbl-96/s_llrintl.c
View File

@ -35,7 +35,7 @@ __llrintl (long double x)
int32_t se,j0;
u_int32_t i0, i1;
long long int result;
volatile long double w;
long double w;
long double t;
int sx;

2
sysdeps/ieee754/ldbl-96/s_lrintl.c
View File

@ -35,7 +35,7 @@ __lrintl (long double x)
int32_t se,j0;
u_int32_t i0, i1;
long int result;
volatile long double w;
long double w;
long double t;
int sx;

5
sysdeps/ieee754/ldbl-96/s_nexttoward.c
View File

@ -70,10 +70,7 @@ double __nexttoward(double x, long double y)
}
hy = hx&0x7ff00000;
if(hy>=0x7ff00000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0 && FLT_EVAL_METHOD != 1)
/* Force conversion to double. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00100000) {

5
sysdeps/ieee754/ldbl-96/s_nexttowardf.c
View File

@ -58,10 +58,7 @@ float __nexttowardf(float x, long double y)
}
hy = hx&0x7f800000;
if(hy>=0x7f800000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0)
/* Force conversion to float. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00800000) {

5
sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c
View File

@ -62,10 +62,7 @@ float __nldbl_nexttowardf(float x, double y)
}
hy = hx&0x7f800000;
if(hy>=0x7f800000) {
x = x+x; /* overflow */
if (FLT_EVAL_METHOD != 0)
/* Force conversion to float. */
asm ("" : "+m"(x));
x = math_narrow_eval (x+x); /* overflow */
return x;
}
if(hy<0x00800000) {