f128M_to_ui32_r_minMag.c File Reference

#include <stdbool.h>
#include <stdint.h>
#include "platform.h"
#include "internals.h"
#include "specialize.h"
#include "softfloat.h"

Include dependency graph for f128M_to_ui32_r_minMag.c:

Go to the source code of this file.

Functions
uint_fast32_t	f128M_to_ui32_r_minMag (const float128_t *aPtr, bool exact)

Function Documentation

f128M_to_ui32_r_minMag()

uint_fast32_t f128M_to_ui32_r_minMag	(	const float128_t *	aPtr,
		bool	exact )

Definition at line 55 of file f128M_to_ui32_r_minMag.c.

{
    const uint32_t *aWPtr;
    uint32_t uiA96;
    int32_t exp;
    uint64_t sig64;
    int32_t shiftDist;
    bool sign;
    uint32_t z;
 
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    aWPtr = (const uint32_t *) aPtr;
    uiA96 = aWPtr[indexWordHi( 4 )];
    exp = expF128UI96( uiA96 );
    sig64 = (uint64_t) fracF128UI96( uiA96 )<<32 | aWPtr[indexWord( 4, 2 )];
    if ( aWPtr[indexWord( 4, 1 )] | aWPtr[indexWord( 4, 0 )] ) sig64 |= 1;
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    shiftDist = 0x402F - exp;
    if ( 49 <= shiftDist ) {
        if ( exact && (exp | sig64) ) {
            softfloat_exceptionFlags |= softfloat_flag_inexact;
        }
        return 0;
    }
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    sign = signF128UI96( uiA96 );
    if ( sign || (shiftDist < 17) ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
        return
            (exp == 0x7FFF) && sig64 ? ui32_fromNaN
                : sign ? ui32_fromNegOverflow : ui32_fromPosOverflow;
    }
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    sig64 |= UINT64_C( 0x0001000000000000 );
    z = sig64>>shiftDist;
    if ( exact && ((uint64_t) z<<shiftDist != sig64) ) {
        softfloat_exceptionFlags |= softfloat_flag_inexact;
    }
    return z;
 
}

Here is the call graph for this function: