NetBSD/lib/libc/gen/infinity_ieee754.c

/*	$NetBSD: infinity_ieee754.c,v 1.1 2003/05/12 15:15:15 kleink Exp $	*/

/*
 * IEEE-compatible infinity.c -- public domain.
 */

#include <math.h>
#include <machine/endian.h>

const union __double_u __infinity =
#if BYTE_ORDER == BIG_ENDIAN
	{ { 0x7f, 0xf0, 0, 0, 0, 0,    0,    0} };
#else
	{ {    0,    0, 0, 0, 0, 0, 0xf0, 0x7f} };
#endif
Rename ieee754_function.c to function_ieee754.c, following the convention used in exec_format.c, loadfile_format.c, subsys_machdep.c etc. Per discussion with Christos. 2003-05-12 19:15:11 +04:00			`/* $NetBSD: infinity_ieee754.c,v 1.1 2003/05/12 15:15:15 kleink Exp $ */`
Clean up some rampant code duplication wrt ieee number handling: - Add alignment-safe double and float unions. - Use the above for the __infinity and __nan constants on all architectures that use the standard ieee754 representation of those constants. - Add a single copy of various ieee754 math functions (frexp, isinf, isnan, ldexp and modf) that had numerous duplicates among the arch-specific directories. - Use the above functions on all architectures where the generic C versions where used. Architectures that had local assembly routines are untouched (for those functions only). 2002-02-19 16:08:12 +03:00
			`/*`
			`* IEEE-compatible infinity.c -- public domain.`
			`*/`

			`#include <math.h>`
			`#include <machine/endian.h>`

			`const union __double_u __infinity =`
			`#if BYTE_ORDER == BIG_ENDIAN`
			`{ { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0} };`
			`#else`
			`{ { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f} };`
			`#endif`