diff options
| author | Maciej W. Rozycki <macro@linux-mips.org> | 2015-04-03 22:25:23 (GMT) |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-04-07 23:09:26 (GMT) |
| commit | d19cf86e2e295b0406b5fa3a35609fb0a99f1bde (patch) | |
| tree | 9c400e82a1c65d82edd0325b24747d3342af1768 | |
| parent | ec98f9a01ffb23ea72471ccbc8c390c8c2e4c0b3 (diff) | |
| download | linux-d19cf86e2e295b0406b5fa3a35609fb0a99f1bde.tar.xz | |
MIPS: math-emu: Factor out NaN FP format conversions
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9686/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/math-emu/dp_fsp.c | 13 | ||||
| -rw-r--r-- | arch/mips/math-emu/sp_fdp.c | 9 |
2 files changed, 15 insertions, 7 deletions
diff --git a/arch/mips/math-emu/dp_fsp.c b/arch/mips/math-emu/dp_fsp.c index ffb69c5..88581f7 100644 --- a/arch/mips/math-emu/dp_fsp.c +++ b/arch/mips/math-emu/dp_fsp.c @@ -22,6 +22,12 @@ #include "ieee754sp.h" #include "ieee754dp.h" +static inline union ieee754dp ieee754dp_nan_fsp(int xs, u64 xm) +{ + return builddp(xs, DP_EMAX + 1 + DP_EBIAS, + xm << (DP_FBITS - SP_FBITS)); +} + union ieee754dp ieee754dp_fsp(union ieee754sp x) { COMPXSP; @@ -38,11 +44,8 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x) return ieee754dp_nanxcpt(ieee754dp_indef()); case IEEE754_CLASS_QNAN: - return ieee754dp_nanxcpt(builddp(xs, - DP_EMAX + 1 + DP_EBIAS, - ((u64) xm - << (DP_FBITS - - SP_FBITS)))); + return ieee754dp_nanxcpt(ieee754dp_nan_fsp(xs, xm)); + case IEEE754_CLASS_INF: return ieee754dp_inf(xs); diff --git a/arch/mips/math-emu/sp_fdp.c b/arch/mips/math-emu/sp_fdp.c index 1b266fb..4c0d0b4 100644 --- a/arch/mips/math-emu/sp_fdp.c +++ b/arch/mips/math-emu/sp_fdp.c @@ -22,6 +22,12 @@ #include "ieee754sp.h" #include "ieee754dp.h" +static inline union ieee754sp ieee754sp_nan_fdp(int xs, u64 xm) +{ + return buildsp(xs, SP_EMAX + 1 + SP_EBIAS, + xm >> (DP_FBITS - SP_FBITS)); +} + union ieee754sp ieee754sp_fdp(union ieee754dp x) { u32 rm; @@ -41,8 +47,7 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x) return ieee754sp_nanxcpt(ieee754sp_indef()); case IEEE754_CLASS_QNAN: - nan = buildsp(xs, SP_EMAX + 1 + SP_EBIAS, (u32) - (xm >> (DP_FBITS - SP_FBITS))); + nan = ieee754sp_nan_fdp(xs, xm); if (!ieee754sp_isnan(nan)) nan = ieee754sp_indef(); return ieee754sp_nanxcpt(nan); |