} LttTime;
-static const unsigned long NANOSECONDS_PER_SECOND = 1000000000;
+#define NANOSECONDS_PER_SECOND 1000000000
-static const LttTime ltt_time_zero = { 0, 0};
+static const LttTime ltt_time_zero = { 0, 0 };
static const LttTime ltt_time_one = { 0, 1 };
-static const LttTime ltt_time_infinite = { G_MAXUINT, G_MAXUINT };
+static const LttTime ltt_time_infinite = { G_MAXUINT, NANOSECONDS_PER_SECOND };
static inline LttTime ltt_time_sub(LttTime t1, LttTime t2)
{
LttTime res;
res.tv_sec = t1.tv_sec - t2.tv_sec;
+ res.tv_nsec = t1.tv_nsec - t2.tv_nsec;
if(t1.tv_nsec < t2.tv_nsec) {
res.tv_sec--;
- res.tv_nsec = NANOSECONDS_PER_SECOND + t1.tv_nsec - t2.tv_nsec;
- }
- else {
- res.tv_nsec = t1.tv_nsec - t2.tv_nsec;
+ res.tv_nsec += NANOSECONDS_PER_SECOND;
}
return res;
}
static inline LttTime ltt_time_add(LttTime t1, LttTime t2)
{
LttTime res;
- res.tv_sec = t1.tv_sec + t2.tv_sec;
res.tv_nsec = t1.tv_nsec + t2.tv_nsec;
+ res.tv_sec = t1.tv_sec + t2.tv_sec;
if(res.tv_nsec >= NANOSECONDS_PER_SECOND) {
res.tv_sec++;
res.tv_nsec -= NANOSECONDS_PER_SECOND;
}
-static inline LttTime ltt_time_mul(LttTime t1, float f)
-{
- LttTime res;
- float d;
- double sec;
-
- if(f == 0.0){
- res.tv_sec = 0;
- res.tv_nsec = 0;
- }else{
- d = 1.0/f;
- sec = t1.tv_sec / (double)d;
- res.tv_sec = sec;
- res.tv_nsec = t1.tv_nsec / (double)d + (sec - res.tv_sec) *
- NANOSECONDS_PER_SECOND;
- res.tv_sec += res.tv_nsec / NANOSECONDS_PER_SECOND;
- res.tv_nsec %= NANOSECONDS_PER_SECOND;
- }
- return res;
-}
-
-
-static inline LttTime ltt_time_div(LttTime t1, float f)
-{
- double sec;
- LttTime res;
-
- sec = t1.tv_sec / (double)f;
- res.tv_sec = sec;
- res.tv_nsec = t1.tv_nsec / (double)f + (sec - res.tv_sec) *
- NANOSECONDS_PER_SECOND;
- res.tv_sec += res.tv_nsec / NANOSECONDS_PER_SECOND;
- res.tv_nsec %= NANOSECONDS_PER_SECOND;
- return res;
-}
-
-
static inline int ltt_time_compare(LttTime t1, LttTime t2)
{
if(t1.tv_sec > t2.tv_sec) return 1;
return 0;
}
+#define LTT_TIME_MIN(a,b) ((ltt_time_compare((a),(b)) < 0) ? (a) : (b))
+#define LTT_TIME_MAX(a,b) ((ltt_time_compare((a),(b)) > 0) ? (a) : (b))
+
#define MAX_TV_SEC_TO_DOUBLE 0x7FFFFF
static inline double ltt_time_to_double(LttTime t1)
{
return res;
}
+/* Use ltt_time_to_double and ltt_time_from_double to check for lack
+ * of precision.
+ */
+static inline LttTime ltt_time_mul(LttTime t1, double d)
+{
+ LttTime res;
+
+ double time_double = ltt_time_to_double(t1);
+
+ time_double = time_double * d;
+
+ res = ltt_time_from_double(time_double);
+
+ return res;
+
+#if 0
+ /* What is that ? (Mathieu) */
+ if(f == 0.0){
+ res.tv_sec = 0;
+ res.tv_nsec = 0;
+ }else{
+ double d;
+ d = 1.0/f;
+ sec = t1.tv_sec / (double)d;
+ res.tv_sec = sec;
+ res.tv_nsec = t1.tv_nsec / (double)d + (sec - res.tv_sec) *
+ NANOSECONDS_PER_SECOND;
+ res.tv_sec += res.tv_nsec / NANOSECONDS_PER_SECOND;
+ res.tv_nsec %= NANOSECONDS_PER_SECOND;
+ }
+ return res;
+#endif //0
+}
+
+
+/* Use ltt_time_to_double and ltt_time_from_double to check for lack
+ * of precision.
+ */
+static inline LttTime ltt_time_div(LttTime t1, double d)
+{
+ LttTime res;
+
+ double time_double = ltt_time_to_double(t1);
+
+ time_double = time_double / d;
+
+ res = ltt_time_from_double(time_double);
+
+ return res;
+
+
+#if 0
+ double sec;
+ LttTime res;
+
+ sec = t1.tv_sec / (double)f;
+ res.tv_sec = sec;
+ res.tv_nsec = t1.tv_nsec / (double)f + (sec - res.tv_sec) *
+ NANOSECONDS_PER_SECOND;
+ res.tv_sec += res.tv_nsec / NANOSECONDS_PER_SECOND;
+ res.tv_nsec %= NANOSECONDS_PER_SECOND;
+ return res;
+#endif //0
+}
+
+static inline guint64 ltt_time_to_uint64(LttTime t1)
+{
+ return (guint64)t1.tv_sec*NANOSECONDS_PER_SECOND
+ + (guint64)t1.tv_nsec;
+}
+
+
+#define MAX_TV_SEC_TO_UINT64 0x3FFFFFFFFFFFFFFFULL
+static inline LttTime ltt_time_from_uint64(guint64 t1)
+{
+ /* We lose precision if tv_sec is > than (2^62)-1
+ * */
+ g_assert(t1 <= MAX_TV_SEC_TO_UINT64);
+ if(t1 > MAX_TV_SEC_TO_UINT64)
+ g_warning("Conversion from non precise uint64 to LttTime");
+ LttTime res;
+ res.tv_sec = t1/NANOSECONDS_PER_SECOND;
+ res.tv_nsec = (t1 - res.tv_sec*NANOSECONDS_PER_SECOND);
+ return res;
+}
+
#endif // LTT_TIME_H