The value of a float type variable is represented using the single-precision 32-bit floating point format IEEE-754 standard that uses 1 bit for sign, 8 bits for biased exponent and 23 bits for mantissa. A float type variable X is assigned the decimal value of −14.25. The representation of X in hexadecimal notation is
(A) C1640000H
(B) 416C0000H
(C) 41640000H
(D) C16C0000H
Answer: (A)
Explanation:
Since No is negative S bit will be 1 Convert 14.25 into binary 1110.01 Normalize it : 1.11001 X 2 ^ 3 Biased Exponent (Add 127) : 3 + 127 = 130 (In binary 10000010) Mantissa : 110010.....0 (Total 23 bits) Num represented in IEEE 754 single precision format : 1 10000010 11001000000000000000000 In Hex (Group of Four bits) - 1100 0001 0110 0100 0000 0000 0000 0000 Num becomes : C1640000