The GNU Modula-2 front end to GCC

gm2-libs-iso/LowShort

DEFINITION MODULE LowShort;

  (* Access to underlying properties of the type SHORTREAL *)

CONST

  radix      = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, radix> )) ;      (* ZType *)

  places     = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, places> )) ;     (* ZType *)

  expoMin    = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, expoMin> )) ;    (* ZType *)

  expoMax    = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, expoMax> )) ;    (* ZType *)

  large      = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, large> )) ;      (* RType *)

  small      = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, small> )) ;      (* RType *)

  IEC559     = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, IEC559> )) ;     (* BOOLEAN *)

  LIA1       = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, LIA1> )) ;       (* BOOLEAN *)

  ISO        = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, ISO> )) ;        (* BOOLEAN *)

  IEEE       = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, IEEE> )) ;       (* BOOLEAN *)

  rounds     = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, rounds> )) ;     (* BOOLEAN *)

  gUnderflow = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, gUnderflow> )) ; (* BOOLEAN *)

  exception  = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, exception> )) ;  (* BOOLEAN *)

  extend     = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, extend> )) ;     (* BOOLEAN *)

  nModes     = __ATTRIBUTE__ __BUILTIN__ (( <SHORTREAL, nModes> )) ;     (* ZType *)

TYPE

  Modes = PACKEDSET OF [0 .. nModes-1];


PROCEDURE exponent (x: SHORTREAL): INTEGER;
  (* Returns the exponent value of x *)


PROCEDURE fraction (x: SHORTREAL): SHORTREAL;
  (* Returns the significand (or significant part) of x *)


PROCEDURE sign (x: SHORTREAL): SHORTREAL;
  (* Returns the signum of x *)


PROCEDURE succ (x: SHORTREAL): SHORTREAL;
  (* Returns the next value of the type SHORTREAL greater than x *)


PROCEDURE ulp (x: SHORTREAL): SHORTREAL;
  (* Returns the value of a unit in the last place of x *)


PROCEDURE pred (x: SHORTREAL): SHORTREAL;
  (* Returns the previous value of the type SHORTREAL less than x *)


PROCEDURE intpart (x: SHORTREAL): SHORTREAL;
  (* Returns the integer part of x *)


PROCEDURE fractpart (x: SHORTREAL): SHORTREAL;
  (* Returns the fractional part of x *)


PROCEDURE scale (x: SHORTREAL; n: INTEGER): SHORTREAL;
  (* Returns the value of x * radix ** n *)


PROCEDURE trunc (x: SHORTREAL; n: INTEGER): SHORTREAL;
  (* Returns the value of the first n places of x *)


PROCEDURE round (x: SHORTREAL; n: INTEGER): SHORTREAL;
  (* Returns the value of x rounded to the first n places *)


PROCEDURE synthesize (expart: INTEGER; frapart: SHORTREAL): SHORTREAL;
  (* Returns a value of the type SHORTREAL constructed from the given expart and frapart *)


PROCEDURE setMode (m: Modes);
  (* Sets status flags appropriate to the underlying implementation of the type SHORTREAL *)


PROCEDURE currentMode (): Modes;
  (* Returns the current status flags in the form set by setMode *)


PROCEDURE IsLowException (): BOOLEAN;
  (* Returns TRUE if the current coroutine is in the exceptional execution state
     because of the raising of an exception in a routine from this module; otherwise
     returns FALSE.
  *)

END LowShort.