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gethitickms(): replace division by multiplication.

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git-svn-id: https://svn.eduke32.com/eduke32@2856 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-08-02 10:52:25 +00:00
parent 69365f2a0b
commit e7d3dcba78
3 changed files with 10 additions and 10 deletions
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8
polymer/eduke32/build/src/sdlayer.c
View file

@ -778,7 +778,7 @@ void releaseallbuttons(void)
static Uint32 timerfreq=0;
static Uint32 timerlastsample=0;
int32_t timerticspersec=0;
static double hiticksperms = 1e308;
static double msperhitick = 0;
static void(*usertimercallback)(void) = NULL;
@ -797,7 +797,7 @@ int32_t inittimer(int32_t tickspersecond)
usertimercallback = NULL;
hiticksperms = (double)gethitickspersec() / 1000;
msperhitick = 1000.0 / (double)gethitickspersec();
return 0;
}
@ -811,7 +811,7 @@ void uninittimer(void)
timerfreq=0;
hiticksperms = 1e308;
msperhitick = 0;
}
//
@ -883,7 +883,7 @@ uint64_t gethitickspersec(void)
ATTRIBUTE((flatten))
double gethitickms(void)
{
return (double)gethiticks() / hiticksperms;
return (double)gethiticks() * msperhitick;
}
//

8
polymer/eduke32/build/src/winlayer.c
View file

@ -1558,7 +1558,7 @@ static const char *GetDInputError(HRESULT code)
static int64_t timerfreq=0;
static int32_t timerlastsample=0;
int32_t timerticspersec=0;
static double hiticksperms = 1e308;
static double msperhitick = 0;
static void (*usertimercallback)(void) = NULL;
// This timer stuff is all Ken's idea.
@ -1603,7 +1603,7 @@ int32_t inittimer(int32_t tickspersecond)
usertimercallback = NULL;
hiticksperms = (double)gethitickspersec() / 1000;
msperhitick = 1000.0 / (double)gethitickspersec();
return 0;
}
@ -1618,7 +1618,7 @@ void uninittimer(void)
timerfreq=0;
timerticspersec = 0;
hiticksperms = 1e308;
msperhitick = 0;
}
//
@ -1672,7 +1672,7 @@ uint64_t gethitickspersec(void)
ATTRIBUTE((flatten))
double gethitickms(void)
{
return (double)gethiticks() / hiticksperms;
return (double)gethiticks() * msperhitick;
}
//

4
polymer/eduke32/source/lunatic/test.elua
View file

@ -203,8 +203,8 @@ gameevent(gv.EVENT_ENTERLEVEL,
t = gv.gethitickms()-t
-- x86_64: 40ns/call, x86: 290 ns/call
-- Windows 32-bit: about 1 us/call
-- x86_64: 35ns/call, x86: 290 ns/call?
-- Windows 32-bit: about 1 us/call?
printf("%d gethitickms() calls took %.03f ms (%.03f us/call)",
N, t, (t*1000)/N)