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The number 2,147,483,647 (or hexadecimal 7FFFFFFF 16) is the maximum positive value for a 32-bit signed binary integer in computing. It is therefore the maximum value for variables declared as integers (e.g., as int ) in many programming languages.
If the variable has a signed integer type, a program may make the assumption that a variable always contains a positive value. An integer overflow can cause the value to wrap and become negative, which violates the program's assumption and may lead to unexpected behavior (for example, 8-bit integer addition of 127 + 1 results in −128, a two's ...
FLT_MAX_EXP, DBL_MAX_EXP, LDBL_MAX_EXP – maximum positive integer such that FLT_RADIX raised to a power one less than that number is a normalized float, double, long double, respectively FLT_MAX_10_EXP , DBL_MAX_10_EXP , LDBL_MAX_10_EXP – maximum positive integer such that 10 raised to that power is a normalized float, double, long double ...
Unlike mathematical integers, a typical datum in a computer has some minimal and maximum possible value. The most common representation of a positive integer is a string of bits, using the binary numeral system. The order of the memory bytes storing the bits varies; see endianness.
In other languages, such as C# [2] or D [3] and, to some degree, in C (as part of nonstandard extensions and proposed standard revisions), [4] [5] the typeof operator returns the static type of the operand. That is, it evaluates to the declared type at that instant in the program, irrespective of its original form.
int f (int z, int * k) {//function accepts an int (by value) and a pointer to int (also by value) as parameter z = 1; // idem Pascal, local value is modified but outer u will not be modified * k = 1; // variable referenced by k (eg, t) will be modified // up to here, z exists and equals 1} x = f (u, & t); // the value of u and the (value of ...
more = 1; negative = (value < 0); /* the size in bits of the variable value, e.g., 64 if value's type is int64_t */ size = no. of bits in signed integer; while (more) {byte = low-order 7 bits of value; value >>= 7; /* the following is only necessary if the implementation of >>= uses a logical shift rather than an arithmetic shift for a signed ...
In the case of an integer, the variable definition is restricted to whole numbers only, and the range will cover every number within its range (including the maximum and minimum). For example, the range of a signed 16-bit integer variable is all the integers from −32,768 to +32,767.