diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2014-04-25 13:48:40 (GMT) |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2014-05-23 13:11:15 (GMT) |
commit | 49548b09e0fa9fddb64e3cd47266193e36b73144 (patch) | |
tree | 3f8016953efebe347fdd0101f67adea87adb45e7 /arch/mips | |
parent | de2fc342b8be474d0d0377b7771719e924c5549e (diff) | |
download | linux-49548b09e0fa9fddb64e3cd47266193e36b73144.tar.xz |
MIPS: math-emu: Cleanup definition of structs describe sp/dp floats.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/math-emu/dp_sqrt.c | 6 | ||||
-rw-r--r-- | arch/mips/math-emu/ieee754.c | 85 | ||||
-rw-r--r-- | arch/mips/math-emu/ieee754.h | 31 | ||||
-rw-r--r-- | arch/mips/math-emu/ieee754dp.h | 13 | ||||
-rw-r--r-- | arch/mips/math-emu/ieee754sp.h | 12 |
5 files changed, 67 insertions, 80 deletions
diff --git a/arch/mips/math-emu/dp_sqrt.c b/arch/mips/math-emu/dp_sqrt.c index 3c36a86..8e88bde 100644 --- a/arch/mips/math-emu/dp_sqrt.c +++ b/arch/mips/math-emu/dp_sqrt.c @@ -110,13 +110,13 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x) /* triple to almost 56 sig. bits: y ~= sqrt(x) to within 1 ulp */ /* t=y*y; z=t; pt[n0]+=0x00100000; t+=z; z=(x-z)*y; */ z = t = ieee754dp_mul(y, y); - t.parts.bexp += 0x001; + t.bexp += 0x001; t = ieee754dp_add(t, z); z = ieee754dp_mul(ieee754dp_sub(x, z), y); /* t=z/(t+x) ; pt[n0]+=0x00100000; y+=t; */ t = ieee754dp_div(z, ieee754dp_add(t, x)); - t.parts.bexp += 0x001; + t.bexp += 0x001; y = ieee754dp_add(y, t); /* twiddle last bit to force y correctly rounded */ @@ -155,7 +155,7 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x) } /* py[n0]=py[n0]+scalx; ...scale back y */ - y.parts.bexp += scalx; + y.bexp += scalx; /* restore rounding mode, possibly set inexact */ ieee754_csr = oldcsr; diff --git a/arch/mips/math-emu/ieee754.c b/arch/mips/math-emu/ieee754.c index ab53f84..670d19b 100644 --- a/arch/mips/math-emu/ieee754.c +++ b/arch/mips/math-emu/ieee754.c @@ -30,64 +30,63 @@ #include <linux/compiler.h> -#include "ieee754int.h" +#include "ieee754.h" #include "ieee754sp.h" #include "ieee754dp.h" /* special constants */ -#define DPSTR(s, b, mh, ml) \ +#define DPCNST(s, b, m) \ { \ .sign = (s), \ - .bexp = (b), \ - .manthi = (mh), \ - .mantlo = (ml) \ + .bexp = (b) + DP_EBIAS, \ + .mant = (m) \ } -const struct ieee754dp_const __ieee754dp_spcvals[] = { - DPSTR(0, DP_EMIN - 1 + DP_EBIAS, 0, 0), /* + zero */ - DPSTR(1, DP_EMIN - 1 + DP_EBIAS, 0, 0), /* - zero */ - DPSTR(0, DP_EBIAS, 0, 0), /* + 1.0 */ - DPSTR(1, DP_EBIAS, 0, 0), /* - 1.0 */ - DPSTR(0, 3 + DP_EBIAS, 0x40000, 0), /* + 10.0 */ - DPSTR(1, 3 + DP_EBIAS, 0x40000, 0), /* - 10.0 */ - DPSTR(0, DP_EMAX + 1 + DP_EBIAS, 0, 0), /* + infinity */ - DPSTR(1, DP_EMAX + 1 + DP_EBIAS, 0, 0), /* - infinity */ - DPSTR(0, DP_EMAX+1+DP_EBIAS, 0x7FFFF, 0xFFFFFFFF), /* + indef quiet Nan */ - DPSTR(0, DP_EMAX + DP_EBIAS, 0xFFFFF, 0xFFFFFFFF), /* + max */ - DPSTR(1, DP_EMAX + DP_EBIAS, 0xFFFFF, 0xFFFFFFFF), /* - max */ - DPSTR(0, DP_EMIN + DP_EBIAS, 0, 0), /* + min normal */ - DPSTR(1, DP_EMIN + DP_EBIAS, 0, 0), /* - min normal */ - DPSTR(0, DP_EMIN - 1 + DP_EBIAS, 0, 1), /* + min denormal */ - DPSTR(1, DP_EMIN - 1 + DP_EBIAS, 0, 1), /* - min denormal */ - DPSTR(0, 31 + DP_EBIAS, 0, 0), /* + 1.0e31 */ - DPSTR(0, 63 + DP_EBIAS, 0, 0), /* + 1.0e63 */ +const union ieee754dp __ieee754dp_spcvals[] = { + DPCNST(0, DP_EMIN - 1, 0x0000000000000ULL), /* + zero */ + DPCNST(1, DP_EMIN - 1, 0x0000000000000ULL), /* - zero */ + DPCNST(0, 0, 0x0000000000000ULL), /* + 1.0 */ + DPCNST(1, 0, 0x0000000000000ULL), /* - 1.0 */ + DPCNST(0, 3, 0x4000000000000ULL), /* + 10.0 */ + DPCNST(1, 3, 0x4000000000000ULL), /* - 10.0 */ + DPCNST(0, DP_EMAX + 1, 0x0000000000000ULL), /* + infinity */ + DPCNST(1, DP_EMAX + 1, 0x0000000000000ULL), /* - infinity */ + DPCNST(0, DP_EMAX + 1, 0x7FFFFFFFFFFFFULL), /* + indef quiet Nan */ + DPCNST(0, DP_EMAX, 0xFFFFFFFFFFFFFULL), /* + max */ + DPCNST(1, DP_EMAX, 0xFFFFFFFFFFFFFULL), /* - max */ + DPCNST(0, DP_EMIN, 0x0000000000000ULL), /* + min normal */ + DPCNST(1, DP_EMIN, 0x0000000000000ULL), /* - min normal */ + DPCNST(0, DP_EMIN - 1, 0x0000000000001ULL), /* + min denormal */ + DPCNST(1, DP_EMIN - 1, 0x0000000000001ULL), /* - min denormal */ + DPCNST(0, 31, 0x0000000000000ULL), /* + 1.0e31 */ + DPCNST(0, 63, 0x0000000000000ULL), /* + 1.0e63 */ }; -#define SPSTR(s, b, m) \ +#define SPCNST(s, b, m) \ { \ .sign = (s), \ - .bexp = (b), \ + .bexp = (b) + SP_EBIAS, \ .mant = (m) \ } -const struct ieee754sp_const __ieee754sp_spcvals[] = { - SPSTR(0, SP_EMIN - 1 + SP_EBIAS, 0), /* + zero */ - SPSTR(1, SP_EMIN - 1 + SP_EBIAS, 0), /* - zero */ - SPSTR(0, SP_EBIAS, 0), /* + 1.0 */ - SPSTR(1, SP_EBIAS, 0), /* - 1.0 */ - SPSTR(0, 3 + SP_EBIAS, 0x200000), /* + 10.0 */ - SPSTR(1, 3 + SP_EBIAS, 0x200000), /* - 10.0 */ - SPSTR(0, SP_EMAX + 1 + SP_EBIAS, 0), /* + infinity */ - SPSTR(1, SP_EMAX + 1 + SP_EBIAS, 0), /* - infinity */ - SPSTR(0, SP_EMAX+1+SP_EBIAS, 0x3FFFFF), /* + indef quiet Nan */ - SPSTR(0, SP_EMAX + SP_EBIAS, 0x7FFFFF), /* + max normal */ - SPSTR(1, SP_EMAX + SP_EBIAS, 0x7FFFFF), /* - max normal */ - SPSTR(0, SP_EMIN + SP_EBIAS, 0), /* + min normal */ - SPSTR(1, SP_EMIN + SP_EBIAS, 0), /* - min normal */ - SPSTR(0, SP_EMIN - 1 + SP_EBIAS, 1), /* + min denormal */ - SPSTR(1, SP_EMIN - 1 + SP_EBIAS, 1), /* - min denormal */ - SPSTR(0, 31 + SP_EBIAS, 0), /* + 1.0e31 */ - SPSTR(0, 63 + SP_EBIAS, 0), /* + 1.0e63 */ +const union ieee754sp __ieee754sp_spcvals[] = { + SPCNST(0, SP_EMIN - 1, 0x000000), /* + zero */ + SPCNST(1, SP_EMIN - 1, 0x000000), /* - zero */ + SPCNST(0, 0, 0x000000), /* + 1.0 */ + SPCNST(1, 0, 0x000000), /* - 1.0 */ + SPCNST(0, 3, 0x200000), /* + 10.0 */ + SPCNST(1, 3, 0x200000), /* - 10.0 */ + SPCNST(0, SP_EMAX + 1, 0x000000), /* + infinity */ + SPCNST(1, SP_EMAX + 1, 0x000000), /* - infinity */ + SPCNST(0, SP_EMAX + 1, 0x3FFFFF), /* + indef quiet Nan */ + SPCNST(0, SP_EMAX, 0x7FFFFF), /* + max normal */ + SPCNST(1, SP_EMAX, 0x7FFFFF), /* - max normal */ + SPCNST(0, SP_EMIN, 0x000000), /* + min normal */ + SPCNST(1, SP_EMIN, 0x000000), /* - min normal */ + SPCNST(0, SP_EMIN - 1, 0x000001), /* + min denormal */ + SPCNST(1, SP_EMIN - 1, 0x000001), /* - min denormal */ + SPCNST(0, 31, 0x000000), /* + 1.0e31 */ + SPCNST(0, 63, 0x000000), /* + 1.0e63 */ }; diff --git a/arch/mips/math-emu/ieee754.h b/arch/mips/math-emu/ieee754.h index e87a636..4f89f85 100644 --- a/arch/mips/math-emu/ieee754.h +++ b/arch/mips/math-emu/ieee754.h @@ -31,36 +31,23 @@ #include <linux/sched.h> #include <asm/bitfield.h> -struct ieee754dp_const { - __BITFIELD_FIELD(unsigned sign:1, - __BITFIELD_FIELD(unsigned bexp:11, - __BITFIELD_FIELD(unsigned manthi:20, - __BITFIELD_FIELD(unsigned mantlo:32, - ;)))) -}; - union ieee754dp { - struct ieee754dp_const oparts; struct { __BITFIELD_FIELD(unsigned int sign:1, __BITFIELD_FIELD(unsigned int bexp:11, __BITFIELD_FIELD(u64 mant:52, ;))) - } parts; - double d; + }; u64 bits; }; -struct ieee754sp_const { - __BITFIELD_FIELD(unsigned sign:1, - __BITFIELD_FIELD(unsigned bexp:8, - __BITFIELD_FIELD(unsigned mant:23, - ;))) -}; - union ieee754sp { - struct ieee754sp_const parts; - float f; + struct { + __BITFIELD_FIELD(unsigned sign:1, + __BITFIELD_FIELD(unsigned bexp:8, + __BITFIELD_FIELD(unsigned mant:23, + ;))) + }; u32 bits; }; @@ -299,8 +286,8 @@ union ieee754dp ieee754dp_dump(char *s, union ieee754dp x); #define IEEE754_SPCVAL_P1E31 15 /* + 1.0e31 */ #define IEEE754_SPCVAL_P1E63 16 /* + 1.0e63 */ -extern const struct ieee754dp_const __ieee754dp_spcvals[]; -extern const struct ieee754sp_const __ieee754sp_spcvals[]; +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) diff --git a/arch/mips/math-emu/ieee754dp.h b/arch/mips/math-emu/ieee754dp.h index 91d785e..231bd76 100644 --- a/arch/mips/math-emu/ieee754dp.h +++ b/arch/mips/math-emu/ieee754dp.h @@ -40,9 +40,9 @@ #define DP_HIDDEN_BIT DP_MBIT(DP_FBITS) #define DP_SIGN_BIT DP_MBIT(63) -#define DPSIGN(dp) (dp.parts.sign) -#define DPBEXP(dp) (dp.parts.bexp) -#define DPMANT(dp) (dp.parts.mant) +#define DPSIGN(dp) (dp.sign) +#define DPBEXP(dp) (dp.bexp) +#define DPMANT(dp) (dp.mant) static inline int ieee754dp_finite(union ieee754dp x) { @@ -74,9 +74,10 @@ static inline union ieee754dp builddp(int s, int bx, u64 m) && (bx) <= DP_EMAX + 1 + DP_EBIAS); assert(((m) >> DP_FBITS) == 0); - r.parts.sign = s; - r.parts.bexp = bx; - r.parts.mant = m; + r.sign = s; + r.bexp = bx; + r.mant = m; + return r; } diff --git a/arch/mips/math-emu/ieee754sp.h b/arch/mips/math-emu/ieee754sp.h index e5295d7..35da62f 100644 --- a/arch/mips/math-emu/ieee754sp.h +++ b/arch/mips/math-emu/ieee754sp.h @@ -40,9 +40,9 @@ #define SP_HIDDEN_BIT SP_MBIT(SP_FBITS) #define SP_SIGN_BIT SP_MBIT(31) -#define SPSIGN(sp) (sp.parts.sign) -#define SPBEXP(sp) (sp.parts.bexp) -#define SPMANT(sp) (sp.parts.mant) +#define SPSIGN(sp) (sp.sign) +#define SPBEXP(sp) (sp.bexp) +#define SPMANT(sp) (sp.mant) static inline int ieee754sp_finite(union ieee754sp x) { @@ -79,9 +79,9 @@ static inline union ieee754sp buildsp(int s, int bx, unsigned m) && (bx) <= SP_EMAX + 1 + SP_EBIAS); assert(((m) >> SP_FBITS) == 0); - r.parts.sign = s; - r.parts.bexp = bx; - r.parts.mant = m; + r.sign = s; + r.bexp = bx; + r.mant = m; return r; } |