softfloat: add functions corresponding to IEEE-2008 min/maxNumMag

Add abs argument to the existing softfloat minmax() function and define
new float{32,64}_{min,max}nummag functions.

minnummag(x,y) returns x if |x| < |y|,
               returns y if |y| < |x|,
               otherwise minnum(x,y)

maxnummag(x,y) returns x if |x| > |y|,
               returns y if |y| > |x|,
               otherwise maxnum(x,y)

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 77177c5..e32e25d 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -374,6 +374,8 @@ float32 float32_min(float32, float32 STATUS_PARAM);
 float32 float32_max(float32, float32 STATUS_PARAM);
 float32 float32_minnum(float32, float32 STATUS_PARAM);
 float32 float32_maxnum(float32, float32 STATUS_PARAM);
+float32 float32_minnummag(float32, float32 STATUS_PARAM);
+float32 float32_maxnummag(float32, float32 STATUS_PARAM);
 int float32_is_quiet_nan( float32 );
 int float32_is_signaling_nan( float32 );
 float32 float32_maybe_silence_nan( float32 );
@@ -484,6 +486,8 @@ float64 float64_min(float64, float64 STATUS_PARAM);
 float64 float64_max(float64, float64 STATUS_PARAM);
 float64 float64_minnum(float64, float64 STATUS_PARAM);
 float64 float64_maxnum(float64, float64 STATUS_PARAM);
+float64 float64_minnummag(float64, float64 STATUS_PARAM);
+float64 float64_maxnummag(float64, float64 STATUS_PARAM);
 int float64_is_quiet_nan( float64 a );
 int float64_is_signaling_nan( float64 );
 float64 float64_maybe_silence_nan( float64 );