src/gnm-datetime.h

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