fixunsdfti.c File Reference

#include "fp64.h"

Include dependency graph for fixunsdfti.c:

Go to the source code of this file.

Functions
fixuint_t	___fixunsdfti (uint64_t a)

Function Documentation

___fixunsdfti()

fixuint_t ___fixunsdfti

(

uint64_t

a

)

Definition at line 15 of file fixunsdfti.c.

                                    {
    // Break a into sign, exponent, significand
    const rep_t aRep = a;
    const rep_t aAbs = aRep & absMask;
    const int sign = aRep & signBit ? -1 : 1;
    const int exponent = (aAbs >> significandBits) - exponentBias;
    const rep_t significand = (aAbs & significandMask) | implicitBit;
 
    // If either the value or the exponent is negative, the result is zero.
    if (sign == -1 || exponent < 0)
        return 0;
 
    // If the value is too large for the integer type, saturate.
    if ((unsigned)exponent >= sizeof(fixuint_t) * CHAR_BIT)
        return ~(fixuint_t)0;
 
    // If 0 <= exponent < significandBits, right shift to get the result.
    // Otherwise, shift left.
    if (exponent < significandBits)
        return significand >> (significandBits - exponent);
    else
        return (fixuint_t)significand << (exponent - significandBits);
}

Here is the caller graph for this function: