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Changed attotime_to_ticks/ticks_to_attotime to use UINTs and the eminline

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functions where possible.
This commit is contained in:
Aaron Giles 2008-12-14 00:34:14 +00:00
parent cfadc42b71
commit ed2768338f
1 changed files with 18 additions and 6 deletions
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24
src/emu/attotime.h
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@ -37,6 +37,7 @@
#define __ATTOTIME_H__ #define __ATTOTIME_H__
#include "mamecore.h" #include "mamecore.h"
#include "eminline.h"
#include <math.h> #include <math.h>
@ -227,10 +228,10 @@ INLINE attoseconds_t attotime_to_attoseconds(attotime _time)
clock ticks at the given frequency clock ticks at the given frequency
-------------------------------------------------*/ -------------------------------------------------*/
INLINE INT64 attotime_to_ticks(attotime _time, INT32 frequency) INLINE UINT64 attotime_to_ticks(attotime _time, UINT32 frequency)
{ {
INT32 fracticks = attotime_mul(attotime_make(0, _time.attoseconds), frequency).seconds; UINT32 fracticks = attotime_mul(attotime_make(0, _time.attoseconds), frequency).seconds;
return (INT64)_time.seconds * (INT64)frequency + fracticks; return mulu_32x32(_time.seconds, frequency) + fracticks;
} }
@ -239,11 +240,22 @@ INLINE INT64 attotime_to_ticks(attotime _time, INT32 frequency)
the given frequency to an attotime the given frequency to an attotime
-------------------------------------------------*/ -------------------------------------------------*/
INLINE attotime ticks_to_attotime(INT64 ticks, INT32 frequency) INLINE attotime ticks_to_attotime(UINT64 ticks, UINT32 frequency)
{ {
attoseconds_t attos_per_tick = HZ_TO_ATTOSECONDS(frequency);
attotime result; attotime result;
result.seconds = ticks / frequency;
result.attoseconds = HZ_TO_ATTOSECONDS(frequency) * (ticks - (INT64)result.seconds * (INT64)frequency); if (ticks < frequency)
{
result.seconds = 0;
result.attoseconds = ticks * attos_per_tick;
}
else
{
UINT32 remainder;
result.seconds = divu_64x32_rem(ticks, frequency, &remainder);
result.attoseconds = (UINT64)remainder * attos_per_tick;
}
return result; return result;
} }