Chapter 2, Problem 2.92HW

Explanation of Solution

Function definition for “float_negate()” function:

The implementation for “float_negate()” function is given below:

//Header file

#include <stdio.h>

#include <assert.h>

//Declare the float_bits in unsigned data type

typedef unsigned float_bits;

//Function declaration for float_negate function

float_bits float_negate(float_bits f);

//Function definition for float_negate function

float_bits float_negate(float_bits f)

{

  //Compute the value of sign field

  unsigned signBit = f >> 31;

  //Compute the value of exponent filed

  unsigned exponentBit = f >> 23 & 0xFF;

  //Compute the value of fraction field

  unsigned fractionBit = f & 0x7FFFFF;

  //Check if the value of "f" is "NaN" or not

  if (exponentBit == 0xFF && fractionBit != 0)

  {

/* If "f" is "NaN", then return the given "f" value */

    return f;

 }

  //Otherwise compute the value of "-f"

return (~signBit << 31) | (exponentBit << 23) | fractionBit;

}

//Main function

int main(int argc, char **argv)

{

/* Call function "float_negate" with checking value using "assert" function */

/* For not a number that is "NaN" */

  assert(float_negate(0xFFFFFFF8) == 0xFFFFFFF8);

/* For a valid number" */

  assert(float_negate(0x10001234) == 0x90001234);

}

The given code is used to compute the value of “-f” that is for floating-point number...