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Filename :
pgtypes_numeric.h
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#ifndef PGTYPES_NUMERIC #define PGTYPES_NUMERIC #define NUMERIC_POS 0x0000 #define NUMERIC_NEG 0x4000 #define NUMERIC_NAN 0xC000 #define NUMERIC_NULL 0xF000 #define NUMERIC_MAX_PRECISION 1000 #define NUMERIC_MAX_DISPLAY_SCALE NUMERIC_MAX_PRECISION #define NUMERIC_MIN_DISPLAY_SCALE 0 #define NUMERIC_MIN_SIG_DIGITS 16 #define DECSIZE 30 typedef unsigned char NumericDigit; typedef struct { int ndigits; /* number of digits in digits[] - can be 0! */ int weight; /* weight of first digit */ int rscale; /* result scale */ int dscale; /* display scale */ int sign; /* NUMERIC_POS, NUMERIC_NEG, or NUMERIC_NAN */ NumericDigit *buf; /* start of alloc'd space for digits[] */ NumericDigit *digits; /* decimal digits */ } numeric; typedef struct { int ndigits; /* number of digits in digits[] - can be 0! */ int weight; /* weight of first digit */ int rscale; /* result scale */ int dscale; /* display scale */ int sign; /* NUMERIC_POS, NUMERIC_NEG, or NUMERIC_NAN */ NumericDigit digits[DECSIZE]; /* decimal digits */ } decimal; #ifdef __cplusplus extern "C" { #endif numeric *PGTYPESnumeric_new(void); decimal *PGTYPESdecimal_new(void); void PGTYPESnumeric_free(numeric *); void PGTYPESdecimal_free(decimal *); numeric *PGTYPESnumeric_from_asc(char *, char **); char *PGTYPESnumeric_to_asc(numeric *, int); int PGTYPESnumeric_add(numeric *, numeric *, numeric *); int PGTYPESnumeric_sub(numeric *, numeric *, numeric *); int PGTYPESnumeric_mul(numeric *, numeric *, numeric *); int PGTYPESnumeric_div(numeric *, numeric *, numeric *); int PGTYPESnumeric_cmp(numeric *, numeric *); int PGTYPESnumeric_from_int(signed int, numeric *); int PGTYPESnumeric_from_long(signed long int, numeric *); int PGTYPESnumeric_copy(numeric *, numeric *); int PGTYPESnumeric_from_double(double, numeric *); int PGTYPESnumeric_to_double(numeric *, double *); int PGTYPESnumeric_to_int(numeric *, int *); int PGTYPESnumeric_to_long(numeric *, long *); int PGTYPESnumeric_to_decimal(numeric *, decimal *); int PGTYPESnumeric_from_decimal(decimal *, numeric *); #ifdef __cplusplus } #endif #endif /* PGTYPES_NUMERIC */