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Fix some aliasing problems.

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This commit is contained in:
David Schultz 2004-02-16 10:02:40 +00:00
parent 7ccbdc0d22
commit 36e22bed27
6 changed files with 94 additions and 52 deletions
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20
lib/libc/alpha/gen/isinf.c
View file

@ -43,18 +43,26 @@ int
isnan(d)
double d;
{
struct ieee_double *p = (struct ieee_double *)&d;
union {
double v;
struct ieee_double s;
} u;
return (p->dbl_exp == DBL_EXP_INFNAN &&
(p->dbl_frach || p->dbl_fracl));
u.v = d;
return (u.s.dbl_exp == DBL_EXP_INFNAN &&
(u.s.dbl_frach || u.s.dbl_fracl));
}
int
isinf(d)
double d;
{
struct ieee_double *p = (struct ieee_double *)&d;
union {
double v;
struct ieee_double s;
} u;
return (p->dbl_exp == DBL_EXP_INFNAN &&
!p->dbl_frach && !p->dbl_fracl);
u.v = d;
return (u.s.dbl_exp == DBL_EXP_INFNAN &&
!u.s.dbl_frach && !u.s.dbl_fracl);
}

33
lib/libc/amd64/gen/isinf.c
View file

@ -41,30 +41,35 @@ __FBSDID("$FreeBSD$");
#include <sys/types.h>
struct IEEEdp {
u_int manl : 32;
u_int manh : 20;
u_int exp : 11;
u_int sign : 1;
};
int
isnan(d)
double d;
{
register struct IEEEdp {
u_int manl : 32;
u_int manh : 20;
u_int exp : 11;
u_int sign : 1;
} *p = (struct IEEEdp *)&d;
union {
double v;
struct IEEEdp s;
} u;
return(p->exp == 2047 && (p->manh || p->manl));
u.v = d;
return(u.s.exp == 2047 && (u.s.manh || u.s.manl));
}
int
isinf(d)
double d;
{
register struct IEEEdp {
u_int manl : 32;
u_int manh : 20;
u_int exp : 11;
u_int sign : 1;
} *p = (struct IEEEdp *)&d;
union {
double v;
struct IEEEdp s;
} u;
return(p->exp == 2047 && !p->manh && !p->manl);
u.v = d;
return(u.s.exp == 2047 && !u.s.manh && !u.s.manl);
}

33
lib/libc/i386/gen/isinf.c
View file

@ -41,30 +41,35 @@ __FBSDID("$FreeBSD$");
#include <sys/types.h>
struct IEEEdp {
u_int manl : 32;
u_int manh : 20;
u_int exp : 11;
u_int sign : 1;
};
int
isnan(d)
double d;
{
register struct IEEEdp {
u_int manl : 32;
u_int manh : 20;
u_int exp : 11;
u_int sign : 1;
} *p = (struct IEEEdp *)&d;
union {
double v;
struct IEEEdp s;
} u;
return(p->exp == 2047 && (p->manh || p->manl));
u.v = d;
return (u.s.exp == 2047 && (u.s.manh || u.s.manl));
}
int
isinf(d)
double d;
{
register struct IEEEdp {
u_int manl : 32;
u_int manh : 20;
u_int exp : 11;
u_int sign : 1;
} *p = (struct IEEEdp *)&d;
union {
double v;
struct IEEEdp s;
} u;
return(p->exp == 2047 && !p->manh && !p->manl);
u.v = d;
return (u.s.exp == 2047 && !u.s.manh && !u.s.manl);
}

20
lib/libc/ia64/gen/isinf.c
View file

@ -43,18 +43,26 @@ int
isnan(d)
double d;
{
struct ieee_double *p = (struct ieee_double *)&d;
union {
double v;
struct ieee_double s;
} u;
return (p->dbl_exp == DBL_EXP_INFNAN &&
(p->dbl_frach || p->dbl_fracl));
u.v = d;
return (u.s.dbl_exp == DBL_EXP_INFNAN &&
(u.s.dbl_frach || u.s.dbl_fracl));
}
int
isinf(d)
double d;
{
struct ieee_double *p = (struct ieee_double *)&d;
union {
double v;
struct ieee_double s;
} u;
return (p->dbl_exp == DBL_EXP_INFNAN &&
!p->dbl_frach && !p->dbl_fracl);
u.v = d;
return (u.s.dbl_exp == DBL_EXP_INFNAN &&
!u.s.dbl_frach && !u.s.dbl_fracl);
}

20
lib/libc/powerpc/gen/isinf.c
View file

@ -43,17 +43,25 @@ __FBSDID("$FreeBSD$");
int
isnan(double d)
{
struct ieee_double *p = (struct ieee_double *)&d;
union {
double v;
struct ieee_double s;
} u;
return (p->dbl_exp == DBL_EXP_INFNAN &&
(p->dbl_frach || p->dbl_fracl));
u.v = d;
return (u.s.dbl_exp == DBL_EXP_INFNAN &&
(u.s.dbl_frach || u.s.dbl_fracl));
}
int
isinf(double d)
{
struct ieee_double *p = (struct ieee_double *)&d;
union {
double v;
struct ieee_double s;
} u;
return (p->dbl_exp == DBL_EXP_INFNAN &&
!p->dbl_frach && !p->dbl_fracl);
u.v = d;
return (u.s.dbl_exp == DBL_EXP_INFNAN &&
!u.s.dbl_frach && !u.s.dbl_fracl);
}

20
lib/libc/sparc64/gen/isinf.c
View file

@ -44,18 +44,26 @@ int
isnan(d)
double d;
{
struct ieee_double *p = (struct ieee_double *)&d;
union {
double v;
struct ieee_double s;
} u;
return (p->dbl_exp == DBL_EXP_INFNAN &&
(p->dbl_frach || p->dbl_fracl));
u.v = d;
return (u.s.dbl_exp == DBL_EXP_INFNAN &&
(u.s.dbl_frach || u.s.dbl_fracl));
}
int
isinf(d)
double d;
{
struct ieee_double *p = (struct ieee_double *)&d;
union {
double v;
struct ieee_double s;
} u;
return (p->dbl_exp == DBL_EXP_INFNAN &&
!p->dbl_frach && !p->dbl_fracl);
u.v = d;
return (u.s.dbl_exp == DBL_EXP_INFNAN &&
!u.s.dbl_frach && !u.s.dbl_fracl);
}