inttypes.ch
Declarations
Public Only
Publicfunction strtoimax
func strtoimax(nptr : *char, endptr : **char, base : int) : intmax_t
Publicfunction strtoumax
func strtoumax(nptr : *char, endptr : **char, base : int) : uintmax_t
Interprets an integer value in a byte string pointed to by nptr.
Discards any whitespace characters (as identified by calling isspace) until the first non-whitespace character is found, then takes as many characters as possible to form a valid base-n (where n=base) integer number representation and converts them to an integer value. The valid integer value consists of the following parts:
(optional) plus or minus sign
(optional) prefix (0) indicating octal base (applies only when the base is 8 or 0)
(optional) prefix (0x or 0X) indicating hexadecimal base (applies only when the base is 16 or 0)
a sequence of digits
The set of valid values for base is {0,2,3,...,36}. The set of valid digits for base-2 integers is {0,1}, for base-3 integers is {0,1,2}, and so on. For bases larger than 10, valid digits include alphabetic characters, starting from Aa for base-11 integer, to Zz for base-36 integer. The case of the characters is ignored.
Additional numeric formats may be accepted by the currently installed C locale.
If the value of base is 0, the numeric base is auto-detected: if the prefix is 0, the base is octal, if the prefix is 0x or 0X, the base is hexadecimal, otherwise the base is decimal.
If the minus sign was part of the input sequence, the numeric value calculated from the sequence of digits is negated as if by unary minus in the result type.
The functions sets the pointer pointed to by endptr to point to the character past the last character interpreted. If endptr is a null pointer, it is ignored.
If the nptr is empty or does not have the expected form, no conversion is performed, and (if endptr is not a null pointer) the value of nptr is stored in the object pointed to by endptr.
If the converted value falls out of range of corresponding return type, a range error occurs (setting errno to ERANGE) and INTMAX_MAX, INTMAX_MIN, UINTMAX_MAX or 0 is returned, as appropriate.
If no conversion can be performed, 0 is returned.
Parameters
- nptr - pointer to the null-terminated byte string to be interpreted TODO restricted @param endptr - pointer to a pointer to character. TODO restricted @param base - base of the interpreted integer value @return If successful, an integer value corresponding to the contents of str is returned. If the converted value falls out of range of corresponding return type, a range error occurs (setting errno to ERANGE) and INTMAX_MAX, INTMAX_MIN, UINTMAX_MAX or 0 is returned, as appropriate. If no conversion can be performed, 0 is returned. @see https:en.cppreference.com/w/c/string/byte/strtoimax
- endptr - pointer to a pointer to character. TODO restricted @param base - base of the interpreted integer value @return If successful, an integer value corresponding to the contents of str is returned. If the converted value falls out of range of corresponding return type, a range error occurs (setting errno to ERANGE) and INTMAX_MAX, INTMAX_MIN, UINTMAX_MAX or 0 is returned, as appropriate. If no conversion can be performed, 0 is returned. @see https:en.cppreference.com/w/c/string/byte/strtoimax
- base - base of the interpreted integer value @return If successful, an integer value corresponding to the contents of str is returned. If the converted value falls out of range of corresponding return type, a range error occurs (setting errno to ERANGE) and INTMAX_MAX, INTMAX_MIN, UINTMAX_MAX or 0 is returned, as appropriate. If no conversion can be performed, 0 is returned. @see https:en.cppreference.com/w/c/string/byte/strtoimax
Returns
If successful, an integer value corresponding to the contents of str is returned. If the converted value falls out of range of corresponding return type, a range error occurs (setting errno to ERANGE) and INTMAX_MAX, INTMAX_MIN, UINTMAX_MAX or 0 is returned, as appropriate. If no conversion can be performed, 0 is returned. @see https:en.cppreference.com/w/c/string/byte/strtoimax
See Also
- https:en.cppreference.com/w/c/string/byte/strtoimax
Publicfunction imaxabs
Computes the absolute value of an integer number. The behavior is undefined if the result cannot be represented by the return type.
Parameters
- n - integer value @return The absolute value of n (i.e. |n|), if it is representable. @see https:en.cppreference.com/w/c/numeric/math/abs
Returns
The absolute value of n (i.e. |n|), if it is representable. @see https:en.cppreference.com/w/c/numeric/math/abs
See Also
- https:en.cppreference.com/w/c/numeric/math/abs
Publicstruct imaxdiv_t
struct imaxdiv_t
the result of imaxdiv function below
Publicfunction imaxdiv
Computes both the quotient and the remainder of the division of the numerator x by the denominator y.
Parameters
- x, y - integer values @return If both the remainder and the quotient can be represented as objects of the corresponding type (int, long, long long, intmax_t, respectively), returns both as an object of type div_t, ldiv_t, lldiv_t, imaxdiv_t @see https:en.cppreference.com/w/c/numeric/math/div
Returns
If both the remainder and the quotient can be represented as objects of the corresponding type (int, long, long long, intmax_t, respectively), returns both as an object of type div_t, ldiv_t, lldiv_t, imaxdiv_t @see https:en.cppreference.com/w/c/numeric/math/div
See Also
- https:en.cppreference.com/w/c/numeric/math/div
Parameters
Returns
If successful, an integer value corresponding to the contents of str is returned. If the converted value falls out of range of corresponding return type, a range error occurs (setting errno to ERANGE) and INTMAX_MAX, INTMAX_MIN, UINTMAX_MAX or 0 is returned, as appropriate. If no conversion can be performed, 0 is returned. @see https:en.cppreference.com/w/c/string/byte/strtoimax
See Also