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| author | James Greenhalgh <james.greenhalgh@arm.com> | 2016-11-23 17:31:25 +0000 |
|---|---|---|
| committer | James Greenhalgh <jgreenhalgh@gcc.gnu.org> | 2016-11-23 17:31:25 +0000 |
| commit | bea64ca303c145dbe9763d63921d405833edeb0c (patch) | |
| tree | 6648eca397948d9d3b8042d1e5a8baf01b6e00e3 /libgcc | |
| parent | 8630cadbc5c4b226cca16e2790fbe84850b634b0 (diff) | |
| download | gcc-bea64ca303c145dbe9763d63921d405833edeb0c.zip gcc-bea64ca303c145dbe9763d63921d405833edeb0c.tar.gz gcc-bea64ca303c145dbe9763d63921d405833edeb0c.tar.bz2 | |
[Patch 15/17 libgcc ARM] Add double to half conversions.
libgcc/
* config/arm/fp16.c (binary64): New.
(__gnu_d2h_internal): New.
(__gnu_d2h_ieee): New.
(__gnu_d2h_alternative): New.
Co-Authored-By: Matthew Wahab <matthew.wahab@arm.com>
From-SVN: r242782
Diffstat (limited to 'libgcc')
| -rw-r--r-- | libgcc/ChangeLog | 8 | ||||
| -rw-r--r-- | libgcc/config/arm/fp16.c | 27 |
2 files changed, 35 insertions, 0 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 0f62834..44a7491 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,6 +1,14 @@ 2016-11-23 James Greenhalgh <james.greenhalgh@arm.com> Matthew Wahab <matthew.wahab@arm.com> + * config/arm/fp16.c (binary64): New. + (__gnu_d2h_internal): New. + (__gnu_d2h_ieee): New. + (__gnu_d2h_alternative): New. + +2016-11-23 James Greenhalgh <james.greenhalgh@arm.com> + Matthew Wahab <matthew.wahab@arm.com> + * config/arm/fp16.c (struct format): New. (binary32): New. (__gnu_float2h_internal): New. Body moved from diff --git a/libgcc/config/arm/fp16.c b/libgcc/config/arm/fp16.c index 76f7327..5828ec3 100644 --- a/libgcc/config/arm/fp16.c +++ b/libgcc/config/arm/fp16.c @@ -43,6 +43,15 @@ binary32 = 23 /* significand. */ }; +static const struct format +binary64 = +{ + 64, /* size. */ + 1023, /* bias. */ + 11, /* exponent. */ + 52 /* significand. */ +}; + static inline unsigned short __gnu_float2h_internal (const struct format* fmt, unsigned long long a, int ieee) @@ -150,6 +159,12 @@ __gnu_f2h_internal (unsigned int a, int ieee) return __gnu_float2h_internal (&binary32, (unsigned long long) a, ieee); } +static inline unsigned short +__gnu_d2h_internal (unsigned long long a, int ieee) +{ + return __gnu_float2h_internal (&binary64, a, ieee); +} + unsigned int __gnu_h2f_internal(unsigned short a, int ieee) { @@ -198,3 +213,15 @@ __gnu_h2f_alternative(unsigned short a) { return __gnu_h2f_internal(a, 0); } + +unsigned short +__gnu_d2h_ieee (unsigned long long a) +{ + return __gnu_d2h_internal (a, 1); +} + +unsigned short +__gnu_d2h_alternative (unsigned long long x) +{ + return __gnu_d2h_internal (x, 0); +} |