| /* %%%%%%%%%%%%%%%%%%%% (c) William Landi 1991 %%%%%%%%%%%%%%%%%%%%%%%%%%%% */ |
| /* Permission to use this code is granted as long as the copyright */ |
| /* notice remains in place. */ |
| /* =============================== convert.h =============================== */ |
| /* Contains routines that convert one thing to another. Most of the routines */ |
| /* deal with converting a number to a string of that number in some base, or */ |
| /* converting a string (assuming some base) into an integer. Basically */ |
| /* just a file of miscellaneous 'useful' routines. */ |
| |
| /* ----------------------------- eoln -------------------------------------- */ |
| /* true if CH is the End Of LiNe character, otherwise false. */ |
| /* 1 parameter: */ |
| /* 1) char CH; Character in question. */ |
| extern int eoln(); |
| |
| /* ------------------------ CHAR_TO_DIGIT ---------------------------------- */ |
| /* 2 parameters: */ |
| /* 1) char CH; character to convert */ |
| /* 2) int NUM_BASE; base of number */ |
| /* Convert a character (CH) into its integer value give base NUM_BASE. Return*/ |
| /* -1 if it is not a valid digit in that base. */ |
| extern int CHAR_TO_DIGIT(); |
| |
| /* ------------------------- NUM_TO_STR ------------------------------------ */ |
| /* 4 parameters: */ |
| /* 1) int NUM; Number to convert */ |
| /* 2) int BASE; Base to convert into */ |
| /* 3) int LEN; Number of digits in final string */ |
| /* 4) char *STR; where to put it. */ |
| /* Put into STR the string with LEN digits that represents the number NUM */ |
| /* in base BASE (eg. NUM_TO_STR(10,16,3,STR) puts "00A" in STR). */ |
| extern void NUM_TO_STR(); |
| |
| /* ------------------------------ GET_NUM ---------------------------------- */ |
| /* 4 parameters: */ |
| /* 1) char **CURRENT_CHAR; pointer to start of string to interpret */ |
| /* as an integer (in NUM_BASE) */ |
| /* 2) int BITS; Number must fit in this may bits 2's */ |
| /* complement. */ |
| /* 3) int NUM_BASE; Base the number is in. */ |
| /* 4) BOOLEAN *ERROR; Was an error detected. */ |
| /* CURRENT_CHAR points to a string. Starting with the character */ |
| /* **CURRENT_CHAR and get the biggest possible integer in BASE NUM_BASE. If */ |
| /* that number is too large/small to fit in BITS bits (2's complement), */ |
| /* Put an error message into ERROR_REC_BUF. Returns 0 if this or any error is*/ |
| /* detected, otherwise it returns the integer representation of the number. */ |
| /* NOTE: If number is to large/small this routine stops as soon as it */ |
| /* realizes this w/o (with out) looking at the rest of the input. */ |
| extern int GET_NUM(); |
| |
| /* -------------------------------- STR_TO_NUM ----------------------------- */ |
| /* Convert the first DIGITS characters of STR to an integer of base BASE. */ |
| /* 5 paramaters: */ |
| /* 1) char *STR; STRing to convert. */ |
| /* 2) int DIGITS; number of DIGITS of string to convert. */ |
| /* 3) int BASE; BASE of the number. */ |
| /* 4) int *NUM; Place to return the result */ |
| /* 5) BOOLEAN *ERROR; Has an error been detected. */ |
| extern void STR_TO_NUM(); |
| |
