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[CRT]
[reactos.git]
/
reactos
/
lib
/
sdk
/
crt
/
misc
/
i10output.c
diff --git
a/reactos/lib/sdk/crt/misc/i10output.c
b/reactos/lib/sdk/crt/misc/i10output.c
index
e6668c9
..
ba291a7
100644
(file)
--- a/
reactos/lib/sdk/crt/misc/i10output.c
+++ b/
reactos/lib/sdk/crt/misc/i10output.c
@@
-11,7
+11,7
@@
struct _I10_OUTPUT_DATA {
/*********************************************************************
* $I10_OUTPUT (MSVCRT.@)
/*********************************************************************
* $I10_OUTPUT (MSVCRT.@)
- * ld
- long double
to be printed to data
+ * ld
80 - long double (Intel 80 bit FP in 12 bytes)
to be printed to data
* prec - precision of part, we're interested in
* flag - 0 for first prec digits, 1 for fractional part
* data - data to be populated
* prec - precision of part, we're interested in
* flag - 0 for first prec digits, 1 for fractional part
* data - data to be populated
@@
-24,16
+24,22
@@
struct _I10_OUTPUT_DATA {
* Native sets last byte of data->str to '0' or '9', I don't know what
* it means. Current implementation sets it always to '0'.
*/
* Native sets last byte of data->str to '0' or '9', I don't know what
* it means. Current implementation sets it always to '0'.
*/
-int CDECL MSVCRT_I10_OUTPUT(
long double ld
, int prec, int flag, struct _I10_OUTPUT_DATA *data)
+int CDECL MSVCRT_I10_OUTPUT(
_LDOUBLE ld80
, int prec, int flag, struct _I10_OUTPUT_DATA *data)
{
static const char inf_str[] = "1#INF";
static const char nan_str[] = "1#QNAN";
{
static const char inf_str[] = "1#INF";
static const char nan_str[] = "1#QNAN";
- double d = ld;
+ /* MS' long double type wants 12 bytes for Intel's 80 bit FP format.
+ * Some UNIX have sizeof(long double) == 16, yet only 80 bit are used.
+ * Assume long double uses 80 bit FP, never seen 128 bit FP. */
+ long double ld = 0;
+ double d;
char format[8];
char buf[I10_OUTPUT_MAX_PREC+9]; /* 9 = strlen("0.e+0000") + '\0' */
char *p;
char format[8];
char buf[I10_OUTPUT_MAX_PREC+9]; /* 9 = strlen("0.e+0000") + '\0' */
char *p;
+ memcpy(&ld, &ld80, 10);
+ d = ld;
TRACE("(%lf %d %x %p)\n", d, prec, flag, data);
if(d<0) {
TRACE("(%lf %d %x %p)\n", d, prec, flag, data);
if(d<0) {
@@
-59,7
+65,7
@@
int CDECL MSVCRT_I10_OUTPUT(long double ld, int prec, int flag, struct _I10_OUTP
}
if(flag&1) {
}
if(flag&1) {
- int exp =
(int)(1+floor(log10(d)
));
+ int exp =
1+floor(log10(d
));
prec += exp;
if(exp < 0)
prec += exp;
if(exp < 0)
@@
-83,7
+89,7
@@
int CDECL MSVCRT_I10_OUTPUT(long double ld, int prec, int flag, struct _I10_OUTP
data->pos++;
for(p = buf+prec+1; p>buf+1 && *p=='0'; p--);
data->pos++;
for(p = buf+prec+1; p>buf+1 && *p=='0'; p--);
- data->len =
(BYTE)(p - buf)
;
+ data->len =
p-buf
;
memcpy(data->str, buf+1, data->len);
data->str[data->len] = '\0';
memcpy(data->str, buf+1, data->len);
data->str[data->len] = '\0';