| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds | 697 | 51.67% | 1 | 4.17% |
| Ralf Baechle | 201 | 14.90% | 9 | 37.50% |
| Markos Chandras | 188 | 13.94% | 5 | 20.83% |
| Jiaxun Yang | 136 | 10.08% | 1 | 4.17% |
| Maciej W. Rozycki | 98 | 7.26% | 4 | 16.67% |
| Aleksandar Markovic | 26 | 1.93% | 2 | 8.33% |
| Thomas Gleixner | 2 | 0.15% | 1 | 4.17% |
| Atsushi Nemoto | 1 | 0.07% | 1 | 4.17% |
| Total | 1349 | 24 |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * MIPS floating point support * Copyright (C) 1994-2000 Algorithmics Ltd. * * 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); union ieee754sp ieee754sp_rint(union ieee754sp 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); union ieee754sp ieee754sp_maddf(union ieee754sp z, union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_msubf(union ieee754sp z, union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_madd(union ieee754sp z, union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_msub(union ieee754sp z, union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_nmadd(union ieee754sp z, union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_nmsub(union ieee754sp z, union ieee754sp x, union ieee754sp y); int ieee754sp_2008class(union ieee754sp x); union ieee754sp ieee754sp_fmin(union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_fmina(union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_fmax(union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_fmaxa(union ieee754sp x, union ieee754sp y); /* * 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); union ieee754dp ieee754dp_rint(union ieee754dp 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); union ieee754dp ieee754dp_maddf(union ieee754dp z, union ieee754dp x, union ieee754dp y); union ieee754dp ieee754dp_msubf(union ieee754dp z, union ieee754dp x, union ieee754dp y); union ieee754dp ieee754dp_madd(union ieee754dp z, union ieee754dp x, union ieee754dp y); union ieee754dp ieee754dp_msub(union ieee754dp z, union ieee754dp x, union ieee754dp y); union ieee754dp ieee754dp_nmadd(union ieee754dp z, union ieee754dp x, union ieee754dp y); union ieee754dp ieee754dp_nmsub(union ieee754dp z, union ieee754dp x, union ieee754dp y); int ieee754dp_2008class(union ieee754dp x); union ieee754dp ieee754dp_fmin(union ieee754dp x, union ieee754dp y); union ieee754dp ieee754dp_fmina(union ieee754dp x, union ieee754dp y); union ieee754dp ieee754dp_fmax(union ieee754dp x, union ieee754dp y); union ieee754dp ieee754dp_fmaxa(union ieee754dp x, union ieee754dp y); /* 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 *)(¤t->thread.fpu.fcr31)) static inline unsigned int ieee754_getrm(void) { return (ieee754_csr.rm); } static inline unsigned int ieee754_setrm(unsigned int rm) { return (ieee754_csr.rm = rm); } /* * get current exceptions */ static inline unsigned int ieee754_getcx(void) { return (ieee754_csr.cx); } /* test for current exception condition */ static inline int ieee754_cxtest(unsigned int n) { return (ieee754_csr.cx & n); } /* * get sticky exceptions */ static inline unsigned int ieee754_getsx(void) { return (ieee754_csr.sx); } /* clear sticky conditions */ static inline unsigned int ieee754_clrsx(void) { return (ieee754_csr.sx = 0); } /* test for sticky exception condition */ static inline int ieee754_sxtest(unsigned int 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_LEG 8 /* legacy quiet NaN */ #define IEEE754_SPCVAL_INDEF_2008 9 /* IEEE 754-2008 quiet NaN */ #define IEEE754_SPCVAL_PMAX 10 /* +max norm */ #define IEEE754_SPCVAL_NMAX 11 /* -max norm */ #define IEEE754_SPCVAL_PMIN 12 /* +min norm */ #define IEEE754_SPCVAL_NMIN 13 /* -min norm */ #define IEEE754_SPCVAL_PMIND 14 /* +min denorm */ #define IEEE754_SPCVAL_NMIND 15 /* -min denorm */ #define IEEE754_SPCVAL_P1E31 16 /* + 1.0e31 */ #define IEEE754_SPCVAL_P1E63 17 /* + 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_LEG + \ ieee754_csr.nan2008]) #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_LEG + \ ieee754_csr.nan2008]) #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 ieee754_csr.nan2008 ? 0 : INT_MAX; } static inline s64 ieee754di_indef(void) { return ieee754_csr.nan2008 ? 0 : S64_MAX; } /* * Overflow integer value */ static inline int ieee754si_overflow(int xs) { return ieee754_csr.nan2008 && xs ? INT_MIN : INT_MAX; } static inline s64 ieee754di_overflow(int xs) { return ieee754_csr.nan2008 && xs ? S64_MIN : 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 */
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