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strtoull

Valid for: CANoe DE • CANoe:lite DE • CANoe4SW DE • CANoe4SW:lite DE

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Function Syntax

int strtoull(char s[], qword& result); // from 1
int strtoull(char s[], dword startIndex, qword& result); // from 2

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Description

Converts the string s to an unsigned 64bit integer. The number base is:
  • hexadecimal if the string starts with ‘0x’
  • octal if it starts with ‘0’
  • decimal otherwise
Whitespace (spaces or tabs) at the start of the string is ignored.

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Parameters

  • s: String to be converted.
  • result: Contains the converted value after the call. The value is 0 if the string can’t be converted to a number. It is the largest possible positive/negative number in case of overflow.
  • startIndex: Position in s where the conversion shall begin.

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Return Values

  • -2: If s is empty or startIndex is larger than strlen(s).
  • -1: An overflow occurs.
Otherwise, returns the index of the first character after the number.

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Example

char s[20] = "123 0xFF";
qword number1, number2;
int res;
res = strtoull(s, number1);
write("number1: %I64u, res: %d", number1, res); // output: number1: 123, res: 3
res = strtoull(s, res, number2);
write("number2: %I64u, res: %d", number2, res); // output: number2: 255, res: 8