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ICU-2707 Fix a typo

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X-SVN-Rev: 11049
This commit is contained in:
George Rhoten 2003-02-14 19:36:20 +00:00
parent 57be3d920d
commit e1faf21914
1 changed files with 33 additions and 29 deletions
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62
icu4c/source/common/putil.c
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@ -126,14 +126,20 @@
/* We return QNAN rather than SNAN*/
#define SIGN 0x80000000U
#if defined(__GNUC__) && __GNUC__ == 3
#define USE_64BIT_DOUBLE_OPTIMIZATION 1
#else
#define USE_64BIT_DOUBLE_OPTIMIZATION 0
#endif
#if USE_64BIT_DOUBLE_OPTIMIZATION
/* gcc 3.2 has an optimization bug */
static const int64_t gNan64 = 0x7FF8000000000000L;
static const int64_t gInf64 = 0x7FF0000000000000L;
static const double * const fgNan = (const double *)(&gNan64);
static const double * const fgInf = (const double *)(&gInf64);
#else
#if IEEE_754
#define NAN_TOP ((int16_t)0x7FF8)
#define INF_TOP ((int16_t)0x7FF0)
@ -145,11 +151,13 @@ static const double * const fgInf = (const double *)(&gInf64);
/* statics */
static UBool fgNaNInitialized = FALSE;
static UBool fgInfInitialized = FALSE;
static double *fgNan;
static double *fgInf;
static double gNan;
static double gInf;
static double * const fgNan = &gNan;
static double * const fgInf = &gInf;
#endif
/* prototypess */
/* prototypes */
static char* u_topNBytesOfDouble(double* d, int n);
static char* u_bottomNBytesOfDouble(double* d, int n);
@ -224,7 +232,7 @@ U_CAPI UBool U_EXPORT2
uprv_isNaN(double number)
{
#if IEEE_754
#if defined(__GNUC__) && __GNUC__ == 3
#if USE_64BIT_DOUBLE_OPTIMIZATION
/* gcc 3.2 has an optimization bug */
/* Infinity is 0x7FF0000000000000U. Anything greater than that is a NaN */
return (UBool)(((*((int64_t *)&number)) & INT64_MAX) > gInf64);
@ -275,7 +283,7 @@ U_CAPI UBool U_EXPORT2
uprv_isInfinite(double number)
{
#if IEEE_754
#if defined(__GNUC__) && __GNUC__ == 3
#if USE_64BIT_DOUBLE_OPTIMIZATION
/* gcc 3.2 has an optimization bug */
return (UBool)(((*((int64_t *)&number)) & INT64_MAX) == gInf64);
#else
@ -345,18 +353,16 @@ U_CAPI double U_EXPORT2
uprv_getNaN()
{
#if IEEE_754 || defined(OS390)
#if defined(U_INT64_T_UNAVAILABLE)
if( !fgNaNInitialized) {
umtx_lock(NULL);
if( ! fgNaNInitialized) {
int i;
int8_t* p = (int8_t*)fgNan;
for(i = 0; i < sizeof(double); ++i)
*p++ = 0;
*(int16_t*)u_topNBytesOfDouble(fgNan, sizeof(NAN_TOP)) = NAN_TOP;
fgNaNInitialized = TRUE;
}
umtx_unlock(NULL);
#if !USE_64BIT_DOUBLE_OPTIMIZATION
if (!fgNaNInitialized) {
/* This variable is always initialized with the same value,
so a mutex isn't needed. */
int i;
int8_t* p = (int8_t*)fgNan;
for(i = 0; i < sizeof(double); ++i)
*p++ = 0;
*(int16_t*)u_topNBytesOfDouble(fgNan, sizeof(NAN_TOP)) = NAN_TOP;
fgNaNInitialized = TRUE;
}
#endif
return *fgNan;
@ -372,19 +378,17 @@ U_CAPI double U_EXPORT2
uprv_getInfinity()
{
#if IEEE_754 || defined(OS390)
#if defined(U_INT64_T_UNAVAILABLE)
#if !USE_64BIT_DOUBLE_OPTIMIZATION
if (!fgInfInitialized)
{
umtx_lock(NULL);
if (!fgInfInitialized) {
int i;
int8_t* p = (int8_t*)fgInf;
for(i = 0; i < sizeof(double); ++i)
*p++ = 0;
*(int16_t*)u_topNBytesOfDouble(fgInf, sizeof(INF_TOP)) = INF_TOP;
fgInfInitialized = TRUE;
}
umtx_unlock(NULL);
/* This variable is always initialized with the same value,
so a mutex isn't needed. */
int i;
int8_t* p = (int8_t*)fgInf;
for(i = 0; i < sizeof(double); ++i)
*p++ = 0;
*(int16_t*)u_topNBytesOfDouble(fgInf, sizeof(INF_TOP)) = INF_TOP;
fgInfInitialized = TRUE;
}
#endif
return *fgInf;