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...

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Chapter 2, Problem 2.91HW

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Chapter 2 Solutions

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Solution Summary: The author explains the function definition for "float_negate()" function. The code computes the value of "-f" that is for floating-point number.

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