freebsd-dev/lib/libc/powerpc/gen/infinity.c

#include <sys/cdefs.h>
#if 0
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: infinity.c,v 1.2 1998/11/14 19:31:02 christos Exp $");
#endif /* LIBC_SCCS and not lint */
#endif
__FBSDID("$FreeBSD$");

/* infinity.c */

#include <math.h>

/* bytes for +Infinity on powerpc */
const union __infinity_un __infinity = { { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 } };

/* bytes for NaN */
const union __nan_un __nan = { { 0xff, 0xc0, 0, 0 } };
Minimal libc for PowerPC. Reviewed by: benno Approved by: re (blanket) 2002-12-04 07:25:14 +00:00			`#include <sys/cdefs.h>`
			`#if 0`
			`#if defined(LIBC_SCCS) && !defined(lint)`
			`__RCSID("$NetBSD: infinity.c,v 1.2 1998/11/14 19:31:02 christos Exp $");`
			`#endif /* LIBC_SCCS and not lint */`
			`#endif`
			`__FBSDID("$FreeBSD$");`

			`/* infinity.c */`

			`#include <math.h>`

			`/* bytes for +Infinity on powerpc */`
			`const union __infinity_un __infinity = { { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 } };`
Implement fpclassify(): o Add a MD header private to libc called _fpmath.h; this header contains bitfield layouts of MD floating-point types. o Add a MI header private to libc called fpmath.h; this header contains bitfield layouts of MI floating-point types. o Add private libc variables to lib/libc/$arch/gen/infinity.c for storing NaN values. o Add __double_t and __float_t to <machine/_types.h>, and provide double_t and float_t typedefs in <math.h>. o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF, HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to <math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via <machine/float.h>. o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based on the size of its argument. __fpclassifyl() is never called on alpha because (sizeof(long double) == sizeof(double)), which is good since __fpclassifyl() can't deal with such a small `long double'. This was developed by David Schultz and myself with input from bde and fenner. PR: 23103 Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU> (significant portions) Reviewed by: bde, fenner (earlier versions) 2003-02-08 20:37:55 +00:00
			`/* bytes for NaN */`
			`const union __nan_un __nan = { { 0xff, 0xc0, 0, 0 } };`