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Diffstat (limited to 'libcrystfel/src/utils.h')
| -rw-r--r-- | libcrystfel/src/utils.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libcrystfel/src/utils.h b/libcrystfel/src/utils.h index 67940ad4..3a228b22 100644 --- a/libcrystfel/src/utils.h +++ b/libcrystfel/src/utils.h @@ -105,6 +105,11 @@ extern double flat_noise(gsl_rng *rng, double expected, double width); extern double gaussian_noise(gsl_rng *rng, double expected, double stddev); extern int poisson_noise(gsl_rng *rng, double expected); +static inline double sq(double a) +{ + return a*a; +} + static inline double distance(double x1, double y1, double x2, double y2) { return sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)); |