protocol

# datep

> Date protocol.

author:
  `Paulo Moura`
version:
  `1.1`
date:
  `2005/3/17`

compilation flags:
  `static`

(no dependencies on other entities)

## Public interface

### today/3

> Returns current date.

compilation flags:
  `static`
template:
  `today(Year,Month,Day)`
mode – number of proofs:
  `today(-integer,-integer,-integer) – one`

### leap_year/1

> True if the argument is a leap year.

compilation flags:
  `static`
template:
  `leap_year(Year)`
mode – number of proofs:
  `leap_year(+integer) – zero_or_one`

### name_of_day/3

> Name and short name of day.

compilation flags:
  `static`
template:
  `name_of_day(Index,Name,Short)`
mode – number of proofs:
  `name_of_day(?integer,?atom,?atom) – zero_or_more`

### name_of_month/3

> Name and short name of month.

compilation flags:
  `static`
template:
  `name_of_month(Index,Name,Short)`
mode – number of proofs:
  `name_of_month(?integer,?atom,?atom) – zero_or_more`

### days_in_month/3

> Number of days in a month.

compilation flags:
  `static`
template:
  `days_in_month(Month,Year,Days)`
mode – number of proofs:
  `days_in_month(?integer,+integer,?integer) – zero_or_more`

### valid/3

> True if the arguments represent a valid date.

compilation flags:
  `static`
template:
  `valid(Year,Month,Day)`
mode – number of proofs:
  `valid(@integer,@integer,@integer) – zero_or_one`

## Protected interface

(none)

## Private predicates

(none)

## Operators

### (none)

## Remarks

### (none)

## See also

### (none)