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[RFC,for,2.11,20/23] fpu/softfloat2a: add half-precision expansions for MINMAX fns

Message ID 20170720150426.12393-21-alex.bennee@linaro.org
State New
Headers show

Commit Message

Alex Bennée July 20, 2017, 3:04 p.m. UTC 
As SoftFloat3c doesn't have helpers for min/max and we already
implemented it in 2a lets just expand the current helpers to include
half-precision functions. The includes having f16 version of the
compare functions.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 fpu/softfloat2a/softfloat.c         |  2 ++
 include/fpu/softfloat2a/softfloat.h | 11 +++++++++++
 2 files changed, 13 insertions(+)
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Patch

diff --git a/fpu/softfloat2a/softfloat.c b/fpu/softfloat2a/softfloat.c
index 4f1abbe08f..67115298bd 100644
--- a/fpu/softfloat2a/softfloat.c
+++ b/fpu/softfloat2a/softfloat.c
@@ -7579,6 +7579,7 @@  int float ## s ## _compare_quiet(float ## s a, float ## s b,                 \
     return float ## s ## _compare_internal(a, b, 1, status);                 \
 }
 
+COMPARE(16, 0x1f)
 COMPARE(32, 0xff)
 COMPARE(64, 0x7ff)
 
@@ -7779,6 +7780,7 @@  float ## s float ## s ## _maxnummag(float ## s a, float ## s b,         \
     return float ## s ## _minmax(a, b, 0, 1, 1, status);                \
 }
 
+MINMAX(16)
 MINMAX(32)
 MINMAX(64)
 
diff --git a/include/fpu/softfloat2a/softfloat.h b/include/fpu/softfloat2a/softfloat.h
index 3cb41977d8..dd1293d802 100644
--- a/include/fpu/softfloat2a/softfloat.h
+++ b/include/fpu/softfloat2a/softfloat.h
@@ -386,6 +386,17 @@  static inline float16 float16_abs(float16 a)
      */
     return make_float16(float16_val(a) & 0x7fff);
 }
+
+/* Expanded by the MINMAX macro in softfloat.c */
+int float16_compare(float16, float16, float_status *status);
+int float16_compare_quiet(float16, float16, float_status *status);
+float16 float16_min(float16, float16, float_status *status);
+float16 float16_max(float16, float16, float_status *status);
+float16 float16_minnum(float16, float16, float_status *status);
+float16 float16_maxnum(float16, float16, float_status *status);
+float16 float16_minnummag(float16, float16, float_status *status);
+float16 float16_maxnummag(float16, float16, float_status *status);
+
 /*----------------------------------------------------------------------------
 | The pattern for a default generated half-precision NaN.
 *----------------------------------------------------------------------------*/