Subversion Repositories openrisc_2011-10-31

/*

/*

 * infinity () returns the representation of infinity.

 * infinity () returns the representation of infinity.

 * Added by Cygnus Support.

 * Added by Cygnus Support.

 */

 */

/*

/*

FUNCTION

FUNCTION

        <<infinity>>, <<infinityf>>--representation of infinity

        <<infinity>>, <<infinityf>>--representation of infinity

INDEX

INDEX

        infinity

        infinity

INDEX

INDEX

        infinityf

        infinityf

ANSI_SYNOPSIS

ANSI_SYNOPSIS

        #include <math.h>

        #include <math.h>

        double infinity(void);

        double infinity(void);

        float infinityf(void);

        float infinityf(void);

DESCRIPTION

DESCRIPTION

        <<infinity>> and <<infinityf>> return the special number IEEE

        <<infinity>> and <<infinityf>> return the special number IEEE

        infinity in double- and single-precision arithmetic

        infinity in double- and single-precision arithmetic

        respectively.

        respectively.

PORTABILITY

PORTABILITY

<<infinity>> and <<infinityf>> are neither standard C nor POSIX.  C and

<<infinity>> and <<infinityf>> are neither standard C nor POSIX.  C and

POSIX require macros HUGE_VAL and HUGE_VALF to be defined in math.h, which

POSIX require macros HUGE_VAL and HUGE_VALF to be defined in math.h, which

Newlib defines to be infinities corresponding to these archaic infinity()

Newlib defines to be infinities corresponding to these archaic infinity()

and infinityf() functions in floating-point implementations which do have

and infinityf() functions in floating-point implementations which do have

infinities.

infinities.

QUICKREF

QUICKREF

        infinity - pure

        infinity - pure

*/

*/

#include "fdlibm.h"

#include "fdlibm.h"

#ifndef _DOUBLE_IS_32BITS

#ifndef _DOUBLE_IS_32BITS

        double infinity()

        double infinity()

{

{

        double x;

        double x;

        INSERT_WORDS(x,0x7ff00000,0);

        INSERT_WORDS(x,0x7ff00000,0);

        return x;

        return x;

}

}

#endif /* _DOUBLE_IS_32BITS */

#endif /* _DOUBLE_IS_32BITS */