arch/mips/math-emu/ieee754.h - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * MIPS floating point support
  * Copyright (C) 1994-2000 Algorithmics Ltd.
  *
  *  This program is free software; you can distribute it and/or modify it
  *  under the terms of the GNU General Public License (Version 2) as
  *  published by the Free Software Foundation.
  *
  *  This program is distributed in the hope it will be useful, but WITHOUT
  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  *  for more details.
  *
  *  You should have received a copy of the GNU General Public License along
  *  with this program; if not, write to the Free Software Foundation, Inc.,
  *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  *
  *  Nov 7, 2000
  *  Modification to allow integration with Linux kernel
  *
  *  Kevin D. Kissell, kevink@mips.com and Carsten Langgard, carstenl@mips.com
  *  Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
  */
 #ifndef __ARCH_MIPS_MATH_EMU_IEEE754_H
 #define __ARCH_MIPS_MATH_EMU_IEEE754_H

 #include <linux/compiler.h>
 #include <asm/byteorder.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <asm/bitfield.h>

 union ieee754dp {
 	struct {
 		__BITFIELD_FIELD(unsigned int sign:1,
 		__BITFIELD_FIELD(unsigned int bexp:11,
 		__BITFIELD_FIELD(u64 mant:52,
 		;)))
 	};
 	u64 bits;
 };

 union ieee754sp {
 	struct {
 		__BITFIELD_FIELD(unsigned sign:1,
 		__BITFIELD_FIELD(unsigned bexp:8,
 		__BITFIELD_FIELD(unsigned mant:23,
 		;)))
 	};
 	u32 bits;
 };

 /*
  * single precision (often aka float)
 */
 int ieee754sp_class(union ieee754sp x);

 union ieee754sp ieee754sp_abs(union ieee754sp x);
 union ieee754sp ieee754sp_neg(union ieee754sp x);

 union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y);
 union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y);
 union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y);
 union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y);

 union ieee754sp ieee754sp_fint(int x);
 union ieee754sp ieee754sp_flong(s64 x);
 union ieee754sp ieee754sp_fdp(union ieee754dp x);

 int ieee754sp_tint(union ieee754sp x);
 s64 ieee754sp_tlong(union ieee754sp x);

 int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cop, int sig);

 union ieee754sp ieee754sp_sqrt(union ieee754sp x);

 /*
  * double precision (often aka double)
 */
 int ieee754dp_class(union ieee754dp x);

 union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y);
 union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y);
 union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y);
 union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y);

 union ieee754dp ieee754dp_abs(union ieee754dp x);
 union ieee754dp ieee754dp_neg(union ieee754dp x);

 union ieee754dp ieee754dp_fint(int x);
 union ieee754dp ieee754dp_flong(s64 x);
 union ieee754dp ieee754dp_fsp(union ieee754sp x);

 int ieee754dp_tint(union ieee754dp x);
 s64 ieee754dp_tlong(union ieee754dp x);

 int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cop, int sig);

 union ieee754dp ieee754dp_sqrt(union ieee754dp x);


 /* 5 types of floating point number
 */
 enum {
 	IEEE754_CLASS_NORM	= 0x00,
 	IEEE754_CLASS_ZERO	= 0x01,
 	IEEE754_CLASS_DNORM	= 0x02,
 	IEEE754_CLASS_INF	= 0x03,
 	IEEE754_CLASS_SNAN	= 0x04,
 	IEEE754_CLASS_QNAN	= 0x05,
 };

 /* exception numbers */
 #define IEEE754_INEXACT			0x01
 #define IEEE754_UNDERFLOW		0x02
 #define IEEE754_OVERFLOW		0x04
 #define IEEE754_ZERO_DIVIDE		0x08
 #define IEEE754_INVALID_OPERATION	0x10

 /* cmp operators
 */
 #define IEEE754_CLT	0x01
 #define IEEE754_CEQ	0x02
 #define IEEE754_CGT	0x04
 #define IEEE754_CUN	0x08

 /*
  * The control status register
  */
 struct _ieee754_csr {
 	__BITFIELD_FIELD(unsigned fcc:7,	/* condition[7:1] */
 	__BITFIELD_FIELD(unsigned nod:1,	/* set 1 for no denormals */
 	__BITFIELD_FIELD(unsigned c:1,		/* condition[0] */
 	__BITFIELD_FIELD(unsigned pad0:3,
 	__BITFIELD_FIELD(unsigned abs2008:1,	/* IEEE 754-2008 ABS/NEG.fmt */
 	__BITFIELD_FIELD(unsigned nan2008:1,	/* IEEE 754-2008 NaN mode */
 	__BITFIELD_FIELD(unsigned cx:6,		/* exceptions this operation */
 	__BITFIELD_FIELD(unsigned mx:5,		/* exception enable  mask */
 	__BITFIELD_FIELD(unsigned sx:5,		/* exceptions total */
 	__BITFIELD_FIELD(unsigned rm:2,		/* current rounding mode */
 	;))))))))))
 };
 #define ieee754_csr (*(struct _ieee754_csr *)(&current->thread.fpu.fcr31))

 static inline unsigned ieee754_getrm(void)
 {
 	return (ieee754_csr.rm);
 }
 static inline unsigned ieee754_setrm(unsigned rm)
 {
 	return (ieee754_csr.rm = rm);
 }

 /*
  * get current exceptions
  */
 static inline unsigned ieee754_getcx(void)
 {
 	return (ieee754_csr.cx);
 }

 /* test for current exception condition
  */
 static inline int ieee754_cxtest(unsigned n)
 {
 	return (ieee754_csr.cx & n);
 }

 /*
  * get sticky exceptions
  */
 static inline unsigned ieee754_getsx(void)
 {
 	return (ieee754_csr.sx);
 }

 /* clear sticky conditions
 */
 static inline unsigned ieee754_clrsx(void)
 {
 	return (ieee754_csr.sx = 0);
 }

 /* test for sticky exception condition
  */
 static inline int ieee754_sxtest(unsigned n)
 {
 	return (ieee754_csr.sx & n);
 }

 /* debugging */
 union ieee754sp ieee754sp_dump(char *s, union ieee754sp x);
 union ieee754dp ieee754dp_dump(char *s, union ieee754dp x);

 #define IEEE754_SPCVAL_PZERO		0	/* +0.0 */
 #define IEEE754_SPCVAL_NZERO		1	/* -0.0 */
 #define IEEE754_SPCVAL_PONE		2	/* +1.0 */
 #define IEEE754_SPCVAL_NONE		3	/* -1.0 */
 #define IEEE754_SPCVAL_PTEN		4	/* +10.0 */
 #define IEEE754_SPCVAL_NTEN		5	/* -10.0 */
 #define IEEE754_SPCVAL_PINFINITY	6	/* +inf */
 #define IEEE754_SPCVAL_NINFINITY	7	/* -inf */
 #define IEEE754_SPCVAL_INDEF		8	/* quiet NaN */
 #define IEEE754_SPCVAL_PMAX		9	/* +max norm */
 #define IEEE754_SPCVAL_NMAX		10	/* -max norm */
 #define IEEE754_SPCVAL_PMIN		11	/* +min norm */
 #define IEEE754_SPCVAL_NMIN		12	/* -min norm */
 #define IEEE754_SPCVAL_PMIND		13	/* +min denorm */
 #define IEEE754_SPCVAL_NMIND		14	/* -min denorm */
 #define IEEE754_SPCVAL_P1E31		15	/* + 1.0e31 */
 #define IEEE754_SPCVAL_P1E63		16	/* + 1.0e63 */

 extern const union ieee754dp __ieee754dp_spcvals[];
 extern const union ieee754sp __ieee754sp_spcvals[];
 #define ieee754dp_spcvals ((const union ieee754dp *)__ieee754dp_spcvals)
 #define ieee754sp_spcvals ((const union ieee754sp *)__ieee754sp_spcvals)

 /*
  * Return infinity with given sign
  */
 #define ieee754dp_inf(sn)     (ieee754dp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)])
 #define ieee754dp_zero(sn)	(ieee754dp_spcvals[IEEE754_SPCVAL_PZERO+(sn)])
 #define ieee754dp_one(sn)	(ieee754dp_spcvals[IEEE754_SPCVAL_PONE+(sn)])
 #define ieee754dp_ten(sn)	(ieee754dp_spcvals[IEEE754_SPCVAL_PTEN+(sn)])
 #define ieee754dp_indef()	(ieee754dp_spcvals[IEEE754_SPCVAL_INDEF])
 #define ieee754dp_max(sn)	(ieee754dp_spcvals[IEEE754_SPCVAL_PMAX+(sn)])
 #define ieee754dp_min(sn)	(ieee754dp_spcvals[IEEE754_SPCVAL_PMIN+(sn)])
 #define ieee754dp_mind(sn)	(ieee754dp_spcvals[IEEE754_SPCVAL_PMIND+(sn)])
 #define ieee754dp_1e31()	(ieee754dp_spcvals[IEEE754_SPCVAL_P1E31])
 #define ieee754dp_1e63()	(ieee754dp_spcvals[IEEE754_SPCVAL_P1E63])

 #define ieee754sp_inf(sn)     (ieee754sp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)])
 #define ieee754sp_zero(sn)	(ieee754sp_spcvals[IEEE754_SPCVAL_PZERO+(sn)])
 #define ieee754sp_one(sn)	(ieee754sp_spcvals[IEEE754_SPCVAL_PONE+(sn)])
 #define ieee754sp_ten(sn)	(ieee754sp_spcvals[IEEE754_SPCVAL_PTEN+(sn)])
 #define ieee754sp_indef()	(ieee754sp_spcvals[IEEE754_SPCVAL_INDEF])
 #define ieee754sp_max(sn)	(ieee754sp_spcvals[IEEE754_SPCVAL_PMAX+(sn)])
 #define ieee754sp_min(sn)	(ieee754sp_spcvals[IEEE754_SPCVAL_PMIN+(sn)])
 #define ieee754sp_mind(sn)	(ieee754sp_spcvals[IEEE754_SPCVAL_PMIND+(sn)])
 #define ieee754sp_1e31()	(ieee754sp_spcvals[IEEE754_SPCVAL_P1E31])
 #define ieee754sp_1e63()	(ieee754sp_spcvals[IEEE754_SPCVAL_P1E63])

 /*
  * Indefinite integer value
  */
 static inline int ieee754si_indef(void)
 {
 	return INT_MAX;
 }

 static inline s64 ieee754di_indef(void)
 {
 	return S64_MAX;
 }

 /* result types for xctx.rt */
 #define IEEE754_RT_SP	0
 #define IEEE754_RT_DP	1
 #define IEEE754_RT_XP	2
 #define IEEE754_RT_SI	3
 #define IEEE754_RT_DI	4

 /* compat */
 #define ieee754dp_fix(x)	ieee754dp_tint(x)
 #define ieee754sp_fix(x)	ieee754sp_tint(x)

 #endif /* __ARCH_MIPS_MATH_EMU_IEEE754_H */
	/*
	* MIPS floating point support
	* Copyright (C) 1994-2000 Algorithmics Ltd.
	*
	* This program is free software; you can distribute it and/or modify it
	* under the terms of the GNU General Public License (Version 2) as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* for more details.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Nov 7, 2000
	* Modification to allow integration with Linux kernel
	*
	* Kevin D. Kissell, kevink@mips.com and Carsten Langgard, carstenl@mips.com
	* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
	*/
	#ifndef __ARCH_MIPS_MATH_EMU_IEEE754_H
	#define __ARCH_MIPS_MATH_EMU_IEEE754_H

	#include <linux/compiler.h>
	#include <asm/byteorder.h>
	#include <linux/kernel.h>
	#include <linux/types.h>
	#include <linux/sched.h>
	#include <asm/bitfield.h>

	union ieee754dp {
	struct {
	__BITFIELD_FIELD(unsigned int sign:1,
	__BITFIELD_FIELD(unsigned int bexp:11,
	__BITFIELD_FIELD(u64 mant:52,
	;)))
	};
	u64 bits;
	};

	union ieee754sp {
	struct {
	__BITFIELD_FIELD(unsigned sign:1,
	__BITFIELD_FIELD(unsigned bexp:8,
	__BITFIELD_FIELD(unsigned mant:23,
	;)))
	};
	u32 bits;
	};

	/*
	* single precision (often aka float)
	*/
	int ieee754sp_class(union ieee754sp x);

	union ieee754sp ieee754sp_abs(union ieee754sp x);
	union ieee754sp ieee754sp_neg(union ieee754sp x);

	union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y);
	union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y);
	union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y);
	union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y);

	union ieee754sp ieee754sp_fint(int x);
	union ieee754sp ieee754sp_flong(s64 x);
	union ieee754sp ieee754sp_fdp(union ieee754dp x);

	int ieee754sp_tint(union ieee754sp x);
	s64 ieee754sp_tlong(union ieee754sp x);

	int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cop, int sig);

	union ieee754sp ieee754sp_sqrt(union ieee754sp x);

	/*
	* double precision (often aka double)
	*/
	int ieee754dp_class(union ieee754dp x);

	union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y);
	union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y);
	union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y);
	union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y);

	union ieee754dp ieee754dp_abs(union ieee754dp x);
	union ieee754dp ieee754dp_neg(union ieee754dp x);

	union ieee754dp ieee754dp_fint(int x);
	union ieee754dp ieee754dp_flong(s64 x);
	union ieee754dp ieee754dp_fsp(union ieee754sp x);

	int ieee754dp_tint(union ieee754dp x);
	s64 ieee754dp_tlong(union ieee754dp x);

	int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cop, int sig);

	union ieee754dp ieee754dp_sqrt(union ieee754dp x);



	/* 5 types of floating point number
	*/
	enum {
	IEEE754_CLASS_NORM = 0x00,
	IEEE754_CLASS_ZERO = 0x01,
	IEEE754_CLASS_DNORM = 0x02,
	IEEE754_CLASS_INF = 0x03,
	IEEE754_CLASS_SNAN = 0x04,
	IEEE754_CLASS_QNAN = 0x05,
	};

	/* exception numbers */
	#define IEEE754_INEXACT 0x01
	#define IEEE754_UNDERFLOW 0x02
	#define IEEE754_OVERFLOW 0x04
	#define IEEE754_ZERO_DIVIDE 0x08
	#define IEEE754_INVALID_OPERATION 0x10

	/* cmp operators
	*/
	#define IEEE754_CLT 0x01
	#define IEEE754_CEQ 0x02
	#define IEEE754_CGT 0x04
	#define IEEE754_CUN 0x08

	/*
	* The control status register
	*/
	struct _ieee754_csr {
	__BITFIELD_FIELD(unsigned fcc:7, /* condition[7:1] */
	__BITFIELD_FIELD(unsigned nod:1, /* set 1 for no denormals */
	__BITFIELD_FIELD(unsigned c:1, /* condition[0] */
	__BITFIELD_FIELD(unsigned pad0:3,
	__BITFIELD_FIELD(unsigned abs2008:1, /* IEEE 754-2008 ABS/NEG.fmt */
	__BITFIELD_FIELD(unsigned nan2008:1, /* IEEE 754-2008 NaN mode */
	__BITFIELD_FIELD(unsigned cx:6, /* exceptions this operation */
	__BITFIELD_FIELD(unsigned mx:5, /* exception enable mask */
	__BITFIELD_FIELD(unsigned sx:5, /* exceptions total */
	__BITFIELD_FIELD(unsigned rm:2, /* current rounding mode */
	;))))))))))
	};
	#define ieee754_csr ((struct _ieee754_csr )(&current->thread.fpu.fcr31))

	static inline unsigned ieee754_getrm(void)
	{
	return (ieee754_csr.rm);
	}
	static inline unsigned ieee754_setrm(unsigned rm)
	{
	return (ieee754_csr.rm = rm);
	}

	/*
	* get current exceptions
	*/
	static inline unsigned ieee754_getcx(void)
	{
	return (ieee754_csr.cx);
	}

	/* test for current exception condition
	*/
	static inline int ieee754_cxtest(unsigned n)
	{
	return (ieee754_csr.cx & n);
	}

	/*
	* get sticky exceptions
	*/
	static inline unsigned ieee754_getsx(void)
	{
	return (ieee754_csr.sx);
	}

	/* clear sticky conditions
	*/
	static inline unsigned ieee754_clrsx(void)
	{
	return (ieee754_csr.sx = 0);
	}

	/* test for sticky exception condition
	*/
	static inline int ieee754_sxtest(unsigned n)
	{
	return (ieee754_csr.sx & n);
	}

	/* debugging */
	union ieee754sp ieee754sp_dump(char *s, union ieee754sp x);
	union ieee754dp ieee754dp_dump(char *s, union ieee754dp x);

	#define IEEE754_SPCVAL_PZERO 0 /* +0.0 */
	#define IEEE754_SPCVAL_NZERO 1 /* -0.0 */
	#define IEEE754_SPCVAL_PONE 2 /* +1.0 */
	#define IEEE754_SPCVAL_NONE 3 /* -1.0 */
	#define IEEE754_SPCVAL_PTEN 4 /* +10.0 */
	#define IEEE754_SPCVAL_NTEN 5 /* -10.0 */
	#define IEEE754_SPCVAL_PINFINITY 6 /* +inf */
	#define IEEE754_SPCVAL_NINFINITY 7 /* -inf */
	#define IEEE754_SPCVAL_INDEF 8 /* quiet NaN */
	#define IEEE754_SPCVAL_PMAX 9 /* +max norm */
	#define IEEE754_SPCVAL_NMAX 10 /* -max norm */
	#define IEEE754_SPCVAL_PMIN 11 /* +min norm */
	#define IEEE754_SPCVAL_NMIN 12 /* -min norm */
	#define IEEE754_SPCVAL_PMIND 13 /* +min denorm */
	#define IEEE754_SPCVAL_NMIND 14 /* -min denorm */
	#define IEEE754_SPCVAL_P1E31 15 /* + 1.0e31 */
	#define IEEE754_SPCVAL_P1E63 16 /* + 1.0e63 */

	extern const union ieee754dp __ieee754dp_spcvals[];
	extern const union ieee754sp __ieee754sp_spcvals[];
	#define ieee754dp_spcvals ((const union ieee754dp *)__ieee754dp_spcvals)
	#define ieee754sp_spcvals ((const union ieee754sp *)__ieee754sp_spcvals)

	/*
	* Return infinity with given sign
	*/
	#define ieee754dp_inf(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)])
	#define ieee754dp_zero(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PZERO+(sn)])
	#define ieee754dp_one(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PONE+(sn)])
	#define ieee754dp_ten(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PTEN+(sn)])
	#define ieee754dp_indef() (ieee754dp_spcvals[IEEE754_SPCVAL_INDEF])
	#define ieee754dp_max(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMAX+(sn)])
	#define ieee754dp_min(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIN+(sn)])
	#define ieee754dp_mind(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIND+(sn)])
	#define ieee754dp_1e31() (ieee754dp_spcvals[IEEE754_SPCVAL_P1E31])
	#define ieee754dp_1e63() (ieee754dp_spcvals[IEEE754_SPCVAL_P1E63])

	#define ieee754sp_inf(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)])
	#define ieee754sp_zero(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PZERO+(sn)])
	#define ieee754sp_one(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PONE+(sn)])
	#define ieee754sp_ten(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PTEN+(sn)])
	#define ieee754sp_indef() (ieee754sp_spcvals[IEEE754_SPCVAL_INDEF])
	#define ieee754sp_max(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMAX+(sn)])
	#define ieee754sp_min(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIN+(sn)])
	#define ieee754sp_mind(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIND+(sn)])
	#define ieee754sp_1e31() (ieee754sp_spcvals[IEEE754_SPCVAL_P1E31])
	#define ieee754sp_1e63() (ieee754sp_spcvals[IEEE754_SPCVAL_P1E63])

	/*
	* Indefinite integer value
	*/
	static inline int ieee754si_indef(void)
	{
	return INT_MAX;
	}

	static inline s64 ieee754di_indef(void)
	{
	return S64_MAX;
	}

	/* result types for xctx.rt */
	#define IEEE754_RT_SP 0
	#define IEEE754_RT_DP 1
	#define IEEE754_RT_XP 2
	#define IEEE754_RT_SI 3
	#define IEEE754_RT_DI 4

	/* compat */
	#define ieee754dp_fix(x) ieee754dp_tint(x)
	#define ieee754sp_fix(x) ieee754sp_tint(x)

	#endif /* __ARCH_MIPS_MATH_EMU_IEEE754_H */