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-
- typedef unsigned char symbol;
-
- /* Or replace 'char' above with 'short' for 16 bit characters.
-
- More precisely, replace 'char' with whatever type guarantees the
- character width you need. Note however that sizeof(symbol) should divide
- HEAD, defined in header.h as 2*sizeof(int), without remainder, otherwise
- there is an alignment problem. In the unlikely event of a problem here,
- consult Martin Porter.
-
- */
-
- struct SN_env {
- symbol * p;
- int c; int l; int lb; int bra; int ket;
- symbol * * S;
- int * I;
- unsigned char * B;
- };
-
- extern struct SN_env * SN_create_env(int S_size, int I_size, int B_size);
- extern void SN_close_env(struct SN_env * z, int S_size);
-
- extern int SN_set_current(struct SN_env * z, int size, const symbol * s);
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