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Diffstat (limited to 'src/include/sffe.h')
| -rw-r--r-- | src/include/sffe.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/include/sffe.h b/src/include/sffe.h new file mode 100644 index 0000000..3f21869 --- /dev/null +++ b/src/include/sffe.h @@ -0,0 +1,139 @@ +/*///////////////////////////////////////////////////////////////////////////////////// +// project : sFFe ( SegFault (or Segmentation Fault :) ) formula evalutaor ) +// author : Mateusz Malczak ( mateusz@malczak.info ) +// wpage : www.segfaultlabs.com/projects/sffe +/////////////////////////////////////////////////////////////////////////////////////// +// possible config definitions +// general +// SFFE_DEVEL - print extra info to stdout +// SFFE_DLL - Windows DLL +// complex numbers +// SFFE_CMPLX_GSL - uses GSL complex number routines +// SFFE_CMPLX_ASM - uses my asm complex unit (compile it with NASM) +/////////////////////////////////////////////////////////////////////////////////////// +// special build for XaoS, for more info visit +// http://www.segfaultlabs.com/projects/sfXaos +/////////////////////////////////////////////////////////////////////////////////////*/ + +#ifndef SFFE_H +#define SFFE_H +#include <config.h> +#include <stdlib.h> + +/* dont udef next line. removing this definitions can lead to compile and/or runtime errors */ +#define SFFE_COMPLEX 1 + +/* --- */ +/*TODO long double needed*/ +#ifdef SFFE_CMPLX_ASM +typedef struct cmpx__ { + double r, i; +} cmplx; +#define sfNumber cmplx +#elif SFFE_CMPLX_GSL +#include <gsl/gsl_complex.h> +typedef gsl_complex cmplx; +#define sfNumber gsl_complex +#endif + +/* basic sffe argument 'stack' */ +typedef struct sfargument__ { + struct sfargument__ *parg; + sfNumber *value; +} sfarg; + +/* sffe function prototype, parameters order is right-to-left (cdecl) */ +typedef sfarg *(*sffptr) (sfarg * const a); + +/* constats eval functions */ +typedef void (*cfptr) (sfNumber * cnst); + +/* function type structure */ +typedef struct sffunction__ { + sffptr fptr; + unsigned char parcnt; + /*FIXME changed from char* to char[20] to get rid of warnings during compilation */ + char name[20]; +} sffunction; + +/* basic sffe 'stack' operation ( function + result slot ) */ +typedef struct sfoperation__ { + sfarg *arg; + sffptr f; +} sfopr; + +/* SFFE main structure */ +typedef struct sffe__ { +/*public*/ + char *expression; /* parsed expression (read-only) */ + char *errormsg; /* parser errors (read-only) */ + sfNumber *result; /* evaluation result (read-only) */ +/* protected/private */ + unsigned int argCount; /* number of argument in use */ + sfarg *args; + unsigned int oprCount; /* number of operations in use */ + sfopr *oprs; + unsigned int varCount; /* number of used variables */ + char *varChars; + sfNumber **varPtrs; + unsigned int userfCount; /* number of user functions */ + sffunction *userf; +/* not used + unsigned int stCount; + sfNumber* statics; +*/ +} sffe; + +#define SFFE sffe +#define sffeparser sffe +#define sfparser sffe +#define SFFEPARSER sffe + +/* 'stack' slot value */ +#define sfvalue(p) (*((p)->value)) + +/* function parameters */ +#define sfaram1(p) ((p)->parg) +#define sfaram2(p) ((p)->parg->parg) +#define sfaram3(p) ((p)->parg->parg->parg) +#define sfaram4(p) ((p)->parg->parg->parg->parg) +#define sfaram5(p) ((p)->parg->parg->parg->parg->parg) +/* and so on */ + + +#ifdef __cplusplus +extern "C" { +#endif + +/* create formula evaluator structure */ + sffe *sffe_alloc(void); +/* free fe structure */ + void sffe_free(sffe ** parser); +/* parse expression 'expression' and strore result in 'parser' struct, error (if any) returned */ + int sffe_parse(sffe ** parser, char *expression); +/* evaulate function and return evaluation result */ + sfNumber sffe_eval(sffe * const parser); +/* evaluate without returnig result */ +//void sffe_eval2(sffe *const parser); +/* register user function with name 'vname', with 'parcnt' parameters and defined with function pointed by 'funptr'*/ + void *sffe_regfunc(sffe ** parser, char *vname, unsigned int parcnt, + sffptr funptr); +/* register single variable 'vptrs' identified by name 'vchars' */ + void *sffe_regvar(sffe ** parser, sfNumber * vptrs, char vchars); +/* register multiple variables */ + void *sffe_regvars(sffe ** parser, unsigned int cN, sfNumber ** vptrs, + char *vchars); +/* get variable 'vchar' pointer */ + sfNumber *sffe_varptr(sffe * const parser, char vchar); +/* set 'vptrs' as 'vchars' variable */ + sfNumber *sffe_setvar(sffe ** parser, sfNumber * vptrs, char vchars); + +#ifdef __cplusplus +} +#endif +#ifdef SFFE_CMPLX_ASM +#include "sffe_cmplx_asm.h" +#elif SFFE_CMPLX_GSL +#include "sffe_cmplx_gsl.h" +#endif +#endif |