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almost last commit for full support of %e %E %f %g %G, left todo is write the numberf function

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svn path=/trunk/; revision=22084
This commit is contained in:
Magnus Olsen 2006-05-28 05:17:19 +00:00
parent d62e9d48be
commit e73250fdc7
2 changed files with 147 additions and 6 deletions
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75
reactos/lib/rtl/sprintf.c
View file

@ -27,6 +27,42 @@
#define SPECIAL 32 /* 0x */
#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
typedef struct {
unsigned int mantissal:32;
unsigned int mantissah:20;
unsigned int exponent:11;
unsigned int sign:1;
} double_t;
static
__inline
int
_isinf(double __x)
{
union
{
double* __x;
double_t* x;
} x;
x.__x = &__x;
return ( x.x->exponent == 0x7ff && ( x.x->mantissah == 0 && x.x->mantissal == 0 ));
}
static
__inline
int
_isnan(double __x)
{
union
{
double* __x;
double_t* x;
} x;
x.__x = &__x;
return ( x.x->exponent == 0x7ff && ( x.x->mantissah != 0 || x.x->mantissal != 0 ));
}
static
__inline
@ -450,9 +486,42 @@ int _vsnprintf(char *buf, size_t cnt, const char *fmt, va_list args)
case 'f':
case 'g':
case 'G':
_double = (double)va_arg(args, double);
str = number(str, end, (int)_double, base, field_width, precision, flags);
continue;
_double = (double)va_arg(args, double);
if ( _isnan(_double) ) {
s = "Nan";
len = 3;
while ( len > 0 ) {
if (str <= end)
*str = *s++;
++str;
len --;
}
} else if ( _isinf(_double) < 0 ) {
s = "-Inf";
len = 4;
while ( len > 0 ) {
if (str <= end)
*str = *s++;
++str;
len --;
}
} else if ( _isinf(_double) > 0 ) {
s = "+Inf";
len = 4;
while ( len > 0 ) {
if (str <= end)
*str = *s++;
++str;
len --;
}
} else {
if ( precision == -1 )
precision = 6;
/* FIXME the float version of number */
str = number(str, end, (int)_double, base, field_width, precision, flags);
}
continue;
/* integer number formats - set up the flags and "break" */

78
reactos/lib/rtl/swprintf.c
View file

@ -27,6 +27,42 @@
#define SPECIAL 32 /* 0x */
#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
typedef struct {
unsigned int mantissal:32;
unsigned int mantissah:20;
unsigned int exponent:11;
unsigned int sign:1;
} double_t;
static
__inline
int
_isinf(double __x)
{
union
{
double* __x;
double_t* x;
} x;
x.__x = &__x;
return ( x.x->exponent == 0x7ff && ( x.x->mantissah == 0 && x.x->mantissal == 0 ));
}
static
__inline
int
_isnan(double __x)
{
union
{
double* __x;
double_t* x;
} x;
x.__x = &__x;
return ( x.x->exponent == 0x7ff && ( x.x->mantissah != 0 || x.x->mantissal != 0 ));
}
static
__inline
@ -245,6 +281,7 @@ int _vsnwprintf(wchar_t *buf, size_t cnt, const wchar_t *fmt, va_list args)
wchar_t * str, * end;
const char *s;
const wchar_t *sw;
const wchar_t *ss;
double _double;
int flags; /* flags to number() */
@ -446,9 +483,44 @@ int _vsnwprintf(wchar_t *buf, size_t cnt, const wchar_t *fmt, va_list args)
case 'f':
case 'g':
case 'G':
_double = (double)va_arg(args, double);
str = number(str, end, (int)_double, base, field_width, precision, flags);
continue;
_double = (double)va_arg(args, double);
if ( _isnan(_double) ) {
ss = L"Nan";
len = 3;
while ( len > 0 ) {
if (str <= end)
*str = *ss++;
++str;
len --;
}
} else if ( _isinf(_double) < 0 ) {
ss = L"-Inf";
len = 4;
while ( len > 0 ) {
if (str <= end)
*str = *ss++;
++str;
len --;
}
} else if ( _isinf(_double) > 0 ) {
ss = L"+Inf";
len = 4;
while ( len > 0 ) {
if (str <= end)
*str = *ss++;
++str;
len --;
}
} else {
if ( precision == -1 )
precision = 6;
/* FIXME the float version of number */
str = number(str, end, (int)_double, base, field_width, precision, flags);
}
continue;
/* integer number formats - set up the flags and "break" */