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Diffstat (limited to 'libcrystfel/src/utils.h')
| -rw-r--r-- | libcrystfel/src/utils.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libcrystfel/src/utils.h b/libcrystfel/src/utils.h index a759ff15..2c756ad7 100644 --- a/libcrystfel/src/utils.h +++ b/libcrystfel/src/utils.h @@ -185,6 +185,8 @@ static inline int within_tolerance(double a, double b, double percent) /* Photon energy (eV) to wavelength (m) */ #define ph_eV_to_lambda(a) ph_en_to_lambda(eV_to_J(a)) +/* Photon energy (eV) to k (1/m) */ +#define ph_eV_to_k(a) ((a)*ELECTRON_CHARGE/PLANCK/C_VACUO) /* ------------------------------ Message macros ---------------------------- */ |