X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Ftv%2Fstrcalc.h;h=0adf445116437aefa41b1b589d72450b7647a8d7;hb=717a8a9d53b61fd59130a161215358e52aa063d1;hp=7a520998087220558c1a27ebc6edc6d4f02c82dc;hpb=60d44ea1844d2f6b59be25bdc473a98ceed1c46e;p=libfirm diff --git a/ir/tv/strcalc.h b/ir/tv/strcalc.h index 7a5209980..0adf44511 100644 --- a/ir/tv/strcalc.h +++ b/ir/tv/strcalc.h @@ -1,23 +1,30 @@ - /****h* tools/strcalc - * - * NAME - * strcalc -- calculations using strings - * Provides basic mathematical operations on values represented as strings - * - * AUTHORS - * Matthias Heil +/* + * Project: libFIRM + * File name: ir/tv/strcalc.h + * Purpose: Provides basic mathematical operations on values represented as strings. + * Author: Mathias Heil + * Modified by: + * Created: + * CVS-ID: $Id$ + * Copyright: (c) 2003 Universität Karlsruhe + * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE. + */ + +/** + * @file strcalc.h * - * DESCRIPTION - * The module uses a string to represent values, and provides operations - * to perform calculations with these values. - * Results are stored in an internal buffer, so you have to make a copy - * of them if you need to store the result. + * The module uses a string to represent values, and provides operations + * to perform calculations with these values. + * Results are stored in an internal buffer, so you have to make a copy + * of them if you need to store the result. * - ******/ + */ #ifndef _STRCALC_H_ #define _STRCALC_H_ +#include "irmode.h" + #ifdef STRCALC_DEBUG_ALL /* switch on all debug options */ # ifndef STRCALC_DEBUG # define STRCALC_DEBUG /* switch on debug output */ @@ -33,19 +40,11 @@ # endif #endif -#ifdef STRCALC_DEBUG - /* shortcut output for debugging */ -# define sc_print_hex(a) sc_print((a), 0, SC_HEX) -# define sc_print_dec(a) sc_print((a), 0, SC_DEC) -# define sc_print_oct(a) sc_print((a), 0, SC_OCT) -# define sc_print_bin(a) sc_print((a), 0, SC_BIN) -#endif - /* * constants, typedefs, enums */ -#define DEFAULT_PRECISION_IN_BYTES 8 +#define SC_DEFAULT_PRECISION 64 enum { SC_0 = 0, @@ -63,72 +62,80 @@ enum { SC_C, SC_D, SC_E, - SC_F, + SC_F }; /** * Possible operations on integer values. */ -enum { - SC_ADD = 0, /**< Addition */ - SC_SUB, /**< Substraction */ - SC_NEG, /**< Unary Minus */ - SC_MUL, /**< Multiplication */ - SC_DIV, /**< Integer Division (with rounding toward zero ?) */ - SC_MOD, /**< Devision Remainder */ - SC_SHL, /**< Left Shift */ - SC_SHR, /**< Logical (unsigned) Right Shift */ - SC_SHRS, /**< Arithmetic (signed) Right Shift */ - SC_ROT, /**< Rotation (both directions) */ - SC_AND, /**< Bitwise And */ - SC_OR, /**< Bitwise Or */ - SC_NOT, /**< Bitwise Not */ - SC_XOR, /**< Bitwise Exclusive Or */ -}; +typedef enum { + SC_ADD = 0, /**< Addition */ + SC_SUB, /**< Substraction */ + SC_NEG, /**< Unary Minus */ + SC_MUL, /**< Multiplication */ + SC_DIV, /**< Integer Division (with rounding toward zero ?) */ + SC_MOD, /**< Devision Remainder */ + SC_SHL, /**< Left Shift */ + SC_SHR, /**< Logical (unsigned) Right Shift */ + SC_SHRS, /**< Arithmetic (signed) Right Shift */ + SC_ROT, /**< Rotation (both directions) */ + SC_AND, /**< Bitwise And */ + SC_OR, /**< Bitwise Or */ + SC_NOT, /**< Bitwise Not */ + SC_XOR /**< Bitwise Exclusive Or */ +} sc_op_t; /** - * The output mode for ntger values. + * The output mode for integer values. */ enum base_t { - SC_hex, /**< hexadecimal output with small letters */ - SC_HEX, /**< hexadecimal output with BIG letters */ - SC_DEC, /**< decimal output */ - SC_OCT, /**< octal output */ - SC_BIN, /**< binary output */ + SC_hex, /**< hexadecimal output with small letters */ + SC_HEX, /**< hexadecimal output with BIG letters */ + SC_DEC, /**< decimal output */ + SC_OCT, /**< octal output */ + SC_BIN /**< binary output */ }; /* * definitions and macros */ -#define sc_add(a, b) sc_calc((a), (b), SC_ADD) -#define sc_sub(a, b) sc_calc((a), (b), SC_SUB) -#define sc_neg(a) sc_calc((a), NULL, SC_NEG) -#define sc_and(a, b) sc_calc((a), (b), SC_AND) -#define sc_or(a, b) sc_calc((a), (b), SC_OR) -#define sc_xor(a, b) sc_calc((a), (b), SC_XOR) -#define sc_not(a) sc_calc((a), NULL, SC_NOT) -#define sc_mul(a, b) sc_calc((a), (b), SC_MUL) -#define sc_div(a, b) sc_calc((a), (b), SC_DIV) -#define sc_mod(a, b) sc_calc((a), (b), SC_MOD) -#define sc_shl(a, b, c, d) sc_bitcalc((a), (b), (c), (d), SC_SHL) -#define sc_shr(a, b, c, d) sc_bitcalc((a), (b), (c), (d), SC_SHR) -#define sc_shrs(a, b, c, d) sc_bitcalc((a), (b), (c), (d), SC_SHRS) -#define sc_rot(a, b, c, d) sc_bitcalc((a), (b), (c), (d), SC_ROT) +#define sc_add(a, b, c) sc_calc((a), (b), SC_ADD, (c)) +#define sc_sub(a, b, c) sc_calc((a), (b), SC_SUB, (c)) +#define sc_neg(a, c) sc_calc((a), NULL, SC_NEG, (c)) +#define sc_and(a, b, c) sc_calc((a), (b), SC_AND, (c)) +#define sc_or(a, b, c) sc_calc((a), (b), SC_OR, (c)) +#define sc_xor(a, b, c) sc_calc((a), (b), SC_XOR, (c)) +#define sc_not(a, c) sc_calc((a), NULL, SC_NOT, (c)) +#define sc_mul(a, b, c) sc_calc((a), (b), SC_MUL, (c)) +#define sc_div(a, b, c) sc_calc((a), (b), SC_DIV, (c)) +#define sc_mod(a, b, c) sc_calc((a), (b), SC_MOD, (c)) +#define sc_shl(a, b, c, d, e) sc_bitcalc((a), (b), (c), (d), SC_SHL, (e)) +#define sc_shr(a, b, c, d, e) sc_bitcalc((a), (b), (c), (d), SC_SHR, (e)) +#define sc_shrs(a, b, c, d, e) sc_bitcalc((a), (b), (c), (d), SC_SHRS, (e)) +#define sc_rot(a, b, c, d, e) sc_bitcalc((a), (b), (c), (d), SC_ROT, (e)) /* * function declarations */ const void *sc_get_buffer(void); -const int sc_get_buffer_length(void); +int sc_get_buffer_length(void); + +/** create an value form a string representation */ +void sc_val_from_str(const char *str, unsigned int len, void *buffer, ir_mode *mode); -void sc_val_from_str(const char *str, unsigned int len); -void sc_val_from_long(long l); +/** create a value from a long */ +void sc_val_from_long(long l, void *buffer); + +/** create a value form an unsigned long */ +void sc_val_from_ulong(unsigned long l, void *buffer); + +/** converts a value to a long */ long sc_val_to_long(const void *val); -void sc_min_from_bits(unsigned int num_bits, unsigned int sign); -void sc_max_from_bits(unsigned int num_bits, unsigned int sign); +void sc_min_from_bits(unsigned int num_bits, unsigned int sign, void *buffer); +void sc_max_from_bits(unsigned int num_bits, unsigned int sign, void *buffer); -void sc_calc(const void *val1, const void *val2, unsigned op); -void sc_bitcalc(const void *val1, const void *val2, int radius, int sign, unsigned op); +void sc_calc(const void *val1, const void *val2, unsigned op, void *buffer); +void sc_bitcalc(const void *val1, const void *val2, int radius, int sign, unsigned op, void *buffer); int sc_comp(const void *val1, const void *val2); int sc_get_highest_set_bit(const void *value); @@ -141,13 +148,21 @@ unsigned char sc_sub_bits(const void *value, int len, unsigned byte_ofs); /** * Converts a tarval into a string. * - * @param val1 the value pointer - * @param bits number of valid bits in this value - * @param base output base + * @param val1 the value pointer + * @param bits number of valid bits in this value + * @param base output base */ const char *sc_print(const void *val1, unsigned bits, enum base_t base); +/** Initialize the strcalc module. + * Sets up internal data structures and constants + * After the first call subsequent calls have no effect + * + * @param precision_in_bytes Specifies internal precision to be used + * for calculations. The reason for being multiples of 8 eludes me + */ void init_strcalc(int precision_in_bytes); -int get_precision(void); +void finish_strcalc(void); +int sc_get_precision(void); #endif /* _STRCALC_H_ */