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FMC TDC 1ns 5cha - Software
Commit 93f71397 authored by Federico Vaga's avatar Federico Vaga
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lib: add function to normalize timestamps 

Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
parent 3c0d2649
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Showing with 25 additions and 4 deletions
lib/fmctdc-lib-math.c
View file @ 93f71397
......@@ -44,11 +44,31 @@ uint64_t fmctdc_ts_ps(struct fmctdc_time *a)
return ps;
}
/**
* It normalizes the timestamp
* @param[in,out] a timestamp
*/
void fmctdc_ts_norm(struct fmctdc_time *a)
{
uint64_t tmp;
if (a->frac >= 4096) {
tmp = a->frac / 4096UL;
a->coarse += tmp;
a->frac -= tmp * 4096UL;
}
if (a->coarse >= 125000000) {
tmp = a->coarse / 125000000UL;
a->seconds += tmp;
a->coarse -= tmp * 125000000UL;
}
}
/**
* It perform the subtraction: a = a - b
* @param[in] a timestamp
* @param[in] b timestamp
* @param[in] a normalized timestamp
* @param[in] b normalized timestamp
*/
void fmctdc_ts_sub(struct fmctdc_time *a, struct fmctdc_time *b)
{
......@@ -76,8 +96,8 @@ void fmctdc_ts_sub(struct fmctdc_time *a, struct fmctdc_time *b)
/**
* It perform an addiction: a = a + b
* @param[in] a timestamp
* @param[in] b timestamp
* @param[in] a normalized timestamp
* @param[in] b normalized timestamp
*/
void fmctdc_ts_add(struct fmctdc_time *a, struct fmctdc_time *b)
{
......
lib/fmctdc-lib.h
View file @ 93f71397
......@@ -226,6 +226,7 @@ extern int fmctdc_flush(struct fmctdc_board *userb, unsigned int channel);
extern uint64_t fmctdc_ts_approx_ns(struct fmctdc_time *a);
extern uint64_t fmctdc_ts_ps(struct fmctdc_time *a);
extern void fmctdc_ts_norm(struct fmctdc_time *a);
extern void fmctdc_ts_sub(struct fmctdc_time *a, struct fmctdc_time *b);
extern void ft_ts_add(struct fmctdc_time *a, struct fmctdc_time *b);
extern int _fmctdc_tscmp(struct fmctdc_time *a, struct fmctdc_time *b);
......
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