pTAL Conversion Guide

Arrays

pTAL Conversion Guide—527302-002

9-3

Nonstring Arrays

In TAL and pTAL, you can specify an initialization string when you declare an array.

TAL

The number of bits in the initialization string must be less than or equal to the number

of bits in the array. In the preceding example, the initialization string contains 64 bits

(four 16-bit integers). TAL also accepts the following declaration, in which the number

of bits in the initialization string (48) is less than the number of bits in the array (64):

INT .a[0:3] := [0,1,2];

TAL reports a warning if the number of bits in the initialization string is greater than the

number of bits in the array, as in the following example:

INT .a[0:3] := [0,1,2,3,4];

Valid:

int p = 'P' := "abcd";

int q[0:3] = 'P' := "abcdabcd";

string r = 'P' := "abcd";

string s[0:3] = 'P' := "abcd";

string t = 'P' := [1,2,3];

string v = 'P' := [1,2,3,4];

string w[0:3] = 'P' := [1,2,3,4];

Example 9-3. Constant Lists in Nonstring Array Declarations (TAL)

Invalid:

INT .a[0:3] := [0,1,2,3,4]; ! WARNING: string is too long

Valid:

INT .a[0:3] := [0,1,2,3]; ! String is 64 bits

INT .a[0:3] := [0,1,2]; ! String is 48 bits

Example 9-2. Constant Lists in Read-Only Array Declarations

(pTAL) (page2of2)