diff options
Diffstat (limited to 'libnetdata/storage_number/storage_number.h')
| -rw-r--r-- | libnetdata/storage_number/storage_number.h | 90 |
1 files changed, 18 insertions, 72 deletions
diff --git a/libnetdata/storage_number/storage_number.h b/libnetdata/storage_number/storage_number.h index faea4775..82c870d6 100644 --- a/libnetdata/storage_number/storage_number.h +++ b/libnetdata/storage_number/storage_number.h @@ -13,6 +13,7 @@ typedef long double NETDATA_DOUBLE; #define NETDATA_DOUBLE_FORMAT_ZERO "%0.0Lf" #define NETDATA_DOUBLE_FORMAT_AUTO "%Lf" #define NETDATA_DOUBLE_MODIFIER "Lf" +#define NETDATA_DOUBLE_FORMAT_G "%0.19Le" #define NETDATA_DOUBLE_MAX LDBL_MAX @@ -24,6 +25,9 @@ typedef long double NETDATA_DOUBLE; #define copysignndd(x, y) copysignl(x, y) #define modfndd(x, y) modfl(x, y) #define fabsndd(x) fabsl(x) +#define floorndd(x) floorl(x) +#define ceilndd(x) ceill(x) +#define log10ndd(x) log10l(x) #else // NETDATA_WITH_LONG_DOUBLE @@ -32,6 +36,7 @@ typedef double NETDATA_DOUBLE; #define NETDATA_DOUBLE_FORMAT_ZERO "%0.0f" #define NETDATA_DOUBLE_FORMAT_AUTO "%f" #define NETDATA_DOUBLE_MODIFIER "f" +#define NETDATA_DOUBLE_FORMAT_G "%0.19e" #define NETDATA_DOUBLE_MAX DBL_MAX @@ -43,6 +48,9 @@ typedef double NETDATA_DOUBLE; #define copysignndd(x, y) copysign(x, y) #define modfndd(x, y) modf(x, y) #define fabsndd(x) fabs(x) +#define floorndd(x) floor(x) +#define ceilndd(x) ceil(x) +#define log10ndd(x) log10(x) #endif // NETDATA_WITH_LONG_DOUBLE @@ -62,6 +70,9 @@ typedef long long collected_number; #define netdata_double_isnumber(a) (fpclassify(a) != FP_NAN && fpclassify(a) != FP_INFINITE) #endif +#define netdata_double_is_zero(a) (!netdata_double_isnumber(a) || considered_equal_ndd(a, 0.0)) +#define netdata_double_is_nonzero(a) (!netdata_double_is_zero(a)) + typedef uint32_t storage_number; typedef struct storage_number_tier1 { @@ -104,8 +115,6 @@ typedef enum { storage_number pack_storage_number(NETDATA_DOUBLE value, SN_FLAGS flags) __attribute__((const)); static inline NETDATA_DOUBLE unpack_storage_number(storage_number value) __attribute__((const)); -int print_netdata_double(char *str, NETDATA_DOUBLE value); - // sign div/mul <--- multiplier / divider ---> 10/100 RESET EXISTS VALUE #define STORAGE_NUMBER_POSITIVE_MAX_RAW (storage_number)( (0 << 31) | (1 << 30) | (1 << 29) | (1 << 28) | (1 << 27) | (1 << 26) | (0 << 25) | (1 << 24) | 0x00ffffff ) #define STORAGE_NUMBER_POSITIVE_MIN_RAW (storage_number)( (0 << 31) | (0 << 30) | (1 << 29) | (1 << 28) | (1 << 27) | (0 << 26) | (0 << 25) | (1 << 24) | 0x00000001 ) @@ -158,75 +167,12 @@ static inline NETDATA_DOUBLE unpack_storage_number(storage_number value) { return sign * unpack_storage_number_lut10x[(factor * 16) + (exp * 8) + mul] * n; } -static inline NETDATA_DOUBLE str2ndd(const char *s, char **endptr) { - int negative = 0; - const char *start = s; - unsigned long long integer_part = 0; - unsigned long decimal_part = 0; - size_t decimal_digits = 0; - - switch(*s) { - case '-': - s++; - negative = 1; - break; - - case '+': - s++; - break; - - case 'n': - if(s[1] == 'a' && s[2] == 'n') { - if(endptr) *endptr = (char *)&s[3]; - return NAN; - } - break; - - case 'i': - if(s[1] == 'n' && s[2] == 'f') { - if(endptr) *endptr = (char *)&s[3]; - return INFINITY; - } - break; - - default: - break; - } - - while (*s >= '0' && *s <= '9') { - integer_part = (integer_part * 10) + (*s - '0'); - s++; - } - - if(unlikely(*s == '.')) { - decimal_part = 0; - s++; - - while (*s >= '0' && *s <= '9') { - decimal_part = (decimal_part * 10) + (*s - '0'); - s++; - decimal_digits++; - } - } - - if(unlikely(*s == 'e' || *s == 'E')) - return strtondd(start, endptr); - - if(unlikely(endptr)) - *endptr = (char *)s; - - if(unlikely(negative)) { - if(unlikely(decimal_digits)) - return -((NETDATA_DOUBLE)integer_part + (NETDATA_DOUBLE)decimal_part / powndd(10.0, decimal_digits)); - else - return -((NETDATA_DOUBLE)integer_part); - } - else { - if(unlikely(decimal_digits)) - return (NETDATA_DOUBLE)integer_part + (NETDATA_DOUBLE)decimal_part / powndd(10.0, decimal_digits); - else - return (NETDATA_DOUBLE)integer_part; - } -} +// all these prefixes should use characters that are not allowed in the numbers they represent +#define HEX_PREFIX "0x" // we check 2 characters when parsing +#define IEEE754_UINT64_B64_PREFIX "#" // we check the 1st character during parsing +#define IEEE754_DOUBLE_B64_PREFIX "@" // we check the 1st character during parsing +#define IEEE754_DOUBLE_HEX_PREFIX "%" // we check the 1st character during parsing + +bool is_system_ieee754_double(void); #endif /* NETDATA_STORAGE_NUMBER_H */ |