src/gnm-datetime.h

   1 #ifndef _GNM_DATETIME_H_
   2 # define _GNM_DATETIME_H_
   3
   4 #include <gnumeric.h>
   5 #include <numbers.h>
   6 #include <goffice/goffice.h>
   7
   8 G_BEGIN_DECLS
   9
  10 gboolean gnm_datetime_allow_negative (void);
  11
  12 gnm_float datetime_value_to_serial_raw (GnmValue const *v, GODateConventions const *conv);
  13 int       datetime_value_to_seconds    (GnmValue const *v, GODateConventions const *conv);
  14
  15 /* These are date-only, no time.  */
  16 gboolean datetime_value_to_g            (GDate *res, GnmValue const *v, GODateConventions const *conv);
  17 int      datetime_value_to_serial       (GnmValue const *v, GODateConventions const *conv);
  18
  19 int     annual_year_basis  (GnmValue const *value_date, GOBasisType basis,
  20                             GODateConventions const *date_conv);
  21 gnm_float yearfrac (GDate const *from, GDate const *to, GOBasisType basis);
  22
  23 void gnm_date_add_days (GDate *d, int n);
  24 void gnm_date_add_months (GDate *d, int n);
  25 void gnm_date_add_years (GDate *d, int n);
  26
  27 #define GNM_DATE_BASIS_HELP                                                     \
  28         { GNM_FUNC_HELP_NOTE, F_("If @{basis} is 0, then the US 30/360 method is used.") }, \
  29         { GNM_FUNC_HELP_NOTE, F_("If @{basis} is 1, then actual number of days is used.") }, \
  30         { GNM_FUNC_HELP_NOTE, F_("If @{basis} is 2, then actual number of days is used within a month, but years are considered only 360 days.") }, \
  31         { GNM_FUNC_HELP_NOTE, F_("If @{basis} is 3, then actual number of days is used within a month, but years are always considered 365 days.") }, \
  32         { GNM_FUNC_HELP_NOTE, F_("If @{basis} is 4, then the European 30/360 method is used.") },
  33
  34
  35 G_END_DECLS
  36
  37 #endif /* _GNM_DATETIME_H_ */