* index range while type (seemingly defined) to always include this particular value
@ 2018-01-04 15:39 Mehdi Saada
2018-01-04 16:19 ` Jeffrey R. Carter
0 siblings, 1 reply; 2+ messages in thread
From: Mehdi Saada @ 2018-01-04 15:39 UTC (permalink / raw)
This line: PUT(POLY.COEF(0));
raises Constraint Error: index check failed. I can't get my head round about this.
Each time the function
See below: 0 is ALWAYS in the index range of COEF, which is an array component.
generic formal parameters:
type T_DEGRE_BASE is range <>;
MAX: in T_DEGRE_BASE;
type definitions:
subtype T_DEGRE is T_DEGRE_BASE range -MAX..MAX;
type T_Vect_Coef is array (T_Degr
type T_Polynome (Degre : T_Degre := 0) is
record
COEF : T_Vect_Coef (0..Degre) := (others => NULL_ELEMENT);
end record;e range <>) of ELEMENT;
And the actual generic parameters:
package RAT is new P_RATIONNELS_G(T_ENTIER => INTEGER);
package POLY is new P_POLY_V1_G(T_DEGRE_BASE => INTEGER,
ELEMENT => RAT.T_RATIONNEL, NULL_ELEMENT => RAT.NULLE, MAX => 10, PUT => RAT_IO.PUT);
Lastly:
subtype T_Entier_Pos is T_Entier range 1..T_Entier'Last;
type T_Rationnel is record
Numerateur : T_Entier := 0;
Denominateur: T_Entier_Pos := 1;
end record;
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: index range while type (seemingly defined) to always include this particular value
2018-01-04 15:39 index range while type (seemingly defined) to always include this particular value Mehdi Saada
@ 2018-01-04 16:19 ` Jeffrey R. Carter
0 siblings, 0 replies; 2+ messages in thread
From: Jeffrey R. Carter @ 2018-01-04 16:19 UTC (permalink / raw)
On 01/04/2018 04:39 PM, Mehdi Saada wrote:
> This line: PUT(POLY.COEF(0));
> raises Constraint Error: index check failed. I can't get my head round about this.
> Each time the function
> See below: 0 is ALWAYS in the index range of COEF, which is an array component.
>
> generic formal parameters:
> type T_DEGRE_BASE is range <>;
> MAX: in T_DEGRE_BASE;
>
> type definitions:
> subtype T_DEGRE is T_DEGRE_BASE range -MAX..MAX;
> type T_Vect_Coef is array (T_Degr
> type T_Polynome (Degre : T_Degre := 0) is
> record
> COEF : T_Vect_Coef (0..Degre) := (others => NULL_ELEMENT);
> end record;e range <>) of ELEMENT;
>
> And the actual generic parameters:
> package RAT is new P_RATIONNELS_G(T_ENTIER => INTEGER);
> package POLY is new P_POLY_V1_G(T_DEGRE_BASE => INTEGER,
> ELEMENT => RAT.T_RATIONNEL, NULL_ELEMENT => RAT.NULLE, MAX => 10, PUT => RAT_IO.PUT);
> Lastly:
> subtype T_Entier_Pos is T_Entier range 1..T_Entier'Last;
> type T_Rationnel is record
> Numerateur : T_Entier := 0;
> Denominateur: T_Entier_Pos := 1;
> end record;
You have not provided enough information to determine what your problem really
is. However, if you declare
Poly : T_Polynome (Degre => T_Degre'First);
then what are valid indices into Poly.Coef?
--
Jeff Carter
"Oh Lord, bless this thy hand grenade, that with it thou
mayst blow thine enemies to tiny bits, in thy mercy."
Monty Python and the Holy Grail
24
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