/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
 */
/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _FMA_H
#define _FMA_H

#ifdef __cplusplus
extern "C" {
#endif

#ifdef __sparc

/*
 * Common definitions for fma routines (SPARC)
 */

/* fsr fields */

/* current exception bits */
#define FSR_NXC         0x1
#define FSR_DZC         0x2
#define FSR_UFC         0x4
#define FSR_OFC         0x8
#define FSR_NVC         0x10
#define FSR_CEXC        0x1f    /* mask for all cexc bits */

/* accrued exception bits */
#define FSR_NXA         0x20
#define FSR_DZA         0x40
#define FSR_UFA         0x80
#define FSR_OFA         0x100
#define FSR_NVA         0x200

/* trap enable bits */
#define FSR_NXM         0x00800000
#define FSR_DZM         0x01000000
#define FSR_UFM         0x02000000
#define FSR_OFM         0x04000000
#define FSR_NVM         0x08000000

/* rounding directions (right-adjusted) */
#define FSR_RN          0
#define FSR_RZ          1
#define FSR_RP          2
#define FSR_RM          3

/* inline templates */
extern void __fenv_getfsr32(unsigned int *);
extern void __fenv_setfsr32(const unsigned int *);

#endif /* __sparc */


#if defined(__x86)

/*
 * Common definitions for fma routines (x86)
 */

/* control and status word fields */

/* exception flags */
#define FSW_NV          0x1
#define FSW_DN          0x2
#define FSW_DZ          0x4
#define FSW_OF          0x8
#define FSW_UF          0x10
#define FSW_NX          0x20

/* exception masks */
#define FCW_NVM         0x00010000
#define FCW_DNM         0x00020000
#define FCW_DZM         0x00040000
#define FCW_OFM         0x00080000
#define FCW_UFM         0x00100000
#define FCW_NXM         0x00200000
#define FCW_ALLM        0x003f0000

/* rounding directions */
#define FCW_RN          0x00000000
#define FCW_RM          0x04000000
#define FCW_RP          0x08000000
#define FCW_RZ          0x0c000000

/* rounding precisions */
#define FCW_P24         0x00000000
#define FCW_P53         0x02000000
#define FCW_P64         0x03000000

/* inline templates */
extern void __fenv_getcwsw(unsigned int *);
extern void __fenv_setcwsw(const unsigned int *);

#endif /* __x86 */

#ifdef __cplusplus
}
#endif

#endif  /* _FMA_H */