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/*
/osxptb/trunk/PsychSourceGL/Source/OSX/Eyelink/EyelinkNewFloatSampleAvailable.c
PROJECTS: Eyelink
AUTHORS:
f.w.cornelissen@rug.nl fwc
E.Peters@ai.rug.nl emp
PLATFORMS: Currently only OS X
HISTORY:
24/05/2001 emp created it (OS9 version)
15/06/06 fwc Adapted from early alpha version.
TARGET LOCATION:
Eyelink.mexmac resides in:
EyelinkToolbox
*/
#include "PsychEyelink.h"
static char useString[] = "NewOrOld = Eyelink('NewFloatSampleAvailable')";
static char synopsisString[] =
"checks if new (float) sample is available\n"
"returns -1 if none or error, 0 if old, 1 if new";
static char seeAlsoString[] = "";
/*
ROUTINE: EYELINKnewfloatsampleavailable
PURPOSE:
uses INT16 CALLTYPE eyelink_newest_float_sample(void FARTYPE *buf);
returns -1 if none or error, 0 if old, 1 if new */
PsychError EyelinkNewFloatSampleAvailable(void)
{
int result = -1;
//all sub functions should have these two lines
PsychPushHelp(useString, synopsisString, seeAlsoString);
if(PsychIsGiveHelp()){PsychGiveHelp();return(PsychError_none);};
//check to see if the user supplied superfluous arguments
PsychErrorExit(PsychCapNumInputArgs(0));
PsychErrorExit(PsychRequireNumInputArgs(0));
PsychErrorExit(PsychCapNumOutputArgs(1));
// Verify eyelink is up and running
EyelinkSystemIsConnected();
EyelinkSystemIsInitialized();
result = eyelink_newest_float_sample(NULL);
PsychCopyOutDoubleArg(1, TRUE, result);
return(PsychError_none);
}
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