csd namespace
Functions
- auto to_csd(double decimal_value, int places) -> std::string -> auto
- auto to_csd_i(int decimal_value) -> std::string -> auto
- auto to_csdfixed(double decimal_value, unsigned int nnz) -> std::string -> auto
- auto to_decimal_using_switch(const char* csd) -> double -> CONSTEXPR14 auto
- auto to_decimal_integral(const char*& csd) -> int -> CONSTEXPR14 auto
- Convert the integral part of a CSD string to a decimal.
- auto to_decimal_fractional(const char* csd) -> double -> CONSTEXPR14 auto
- Convert the fractional part of a CSD string to a decimal.
- auto to_decimal(const char* csd) -> double -> CONSTEXPR14 auto
- Convert the CSD string to a decimal.
- auto to_decimal_i(const char* csd) -> int -> CONSTEXPR14 auto
- Convert the CSD string to a decimal.
- auto longest_repeated_substring(const char* sv, size_t n) -> std::string -> auto
- Longest repeated non-overlapping substring.
Function documentation
auto csd::
| Parameters | |
|---|---|
| decimal_value in | - The number to convert to CSD format. |
| places in | - The number of decimal places to include in the CSD representation. |
| Returns | String representation of the input number in CSD format. |
Converts a double precision floating point number to a string representation in Canonical Signed Digit (CSD) format with a specified number of decimal places.
Original author: Harnesser https:/
auto csd::
| Parameters | |
|---|---|
| decimal_value in | - The integer to convert to CSD format. |
| Returns | String representation of the input integer in CSD format. |
Converts an integer to a string representation in Canonical Signed Digit (CSD) format.
Original author: Harnesser https:/
auto csd::
| Parameters | |
|---|---|
| decimal_value in | - The number to convert to CSD format. |
| nnz in | - The maximum number of non-zero digits allowed in the CSD representation. |
| Returns | String representation of the input number in CSD format with nnz non-zero digits. |
Converts a double precision floating point number to a CSD (Canonical Signed Digit) string representation with a fixed number of non-zero digits.
This is an exported API function.
CONSTEXPR14 auto csd::
| Parameters | |
|---|---|
| csd in | The parameter csd is a pointer to a character array, which represents the input string. It is assumed that the string is null-terminated. |
| Returns | double decimal value of the CSD format |
Converts a CSD string to a double precision decimal number using a switch statement.
This is an internal implementation detail, not part of the public API.
CONSTEXPR14 auto csd::
Convert the integral part of a CSD string to a decimal.
| Parameters | |
|---|---|
| csd in | - Pointer to the null-terminated CSD string |
| Returns | The decimal value of the integral part |
This function takes a pointer to a null-terminated CSD string, which represents a number in canonical signed digit format. It iterates through the string, processing each character and accumulating a decimal value for just the integral part of the number.
For each '0' digit, it multiplies the current value by 2. For each '+' digit, it multiplies the current value by 2 and adds 1. For each '-' digit, it multiplies the current value by 2 and subtracts 1.
It stops when it reaches either a '.' or '\0' character, as those mark the end of the integral part.
It throws an exception if any invalid character is encountered.
CONSTEXPR14 auto csd::
Convert the fractional part of a CSD string to a decimal.
This function takes a pointer to a CSD string that contains a fractional part, starting after the '.' character. It iterates through the fractional digits, keeping track of a scaling factor. For each '+' it adds, and for each '-' it subtracts, a fraction of the current scale. This builds up the fractional part of the final decimal number.
CONSTEXPR14 auto csd::
Convert the CSD string to a decimal.
| Parameters | |
|---|---|
| csd in | - Pointer to the null-terminated CSD string to convert |
| Returns | The decimal value of the CSD string |
This function takes a CSD (Canonical Signed Digit) string as input and converts it to a decimal number. It iterates through the characters of the string and performs operations based on each character to build up the decimal value.
The integral part is processed first, multiplying the value by 2 for each '0' and adding/subtracting 1 for '+'/'-'.
Then the fractional part is processed, starting with a scale of 0.5 and adding/ subtracting fractions of that scale based on the '+/-' digits.
The function throws an exception if any invalid characters are encountered.
CONSTEXPR14 auto csd::
Convert the CSD string to a decimal.
| Parameters | |
|---|---|
| csd in | The parameter csd is a pointer to a character array, which represents the input string. It is assumed that the string is null-terminated. |
| Returns | int decimal value of the CSD format |
The function to_decimal_i takes a CSD (Canonical Signed Digit) string as input and converts it to an integer. It iterates through the characters of the string and performs the corresponding operations based on the character.
auto csd::
Longest repeated non-overlapping substring.
| Parameters | |
|---|---|
| sv in | The parameter sv is a pointer to a character array, which represents the input string. It is assumed that the string is null-terminated. |
| n in | The parameter n represents the length of the input string sv. |
| Returns | The function longest_repeated_substring returns a string, which is the longest repeated substring in the given input string sv. |
The function longest_repeated_substring takes a string and its length as input and returns the longest repeated substring in the string.