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author | Chih-Min Chao <chihmin.chao@sifive.com> | 2019-04-25 22:50:50 -0700 |
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committer | Chih-Min Chao <chihmin.chao@sifive.com> | 2019-04-25 23:04:26 -0700 |
commit | 7d3a84f71666cb9669b57abf093b45c317c8d5a9 (patch) | |
tree | 6e97e212e7ccea725ffd077466b908fef7f54eea /softfloat | |
parent | 676fe28bbbe9096a60a8e9d4fa1cf16e3a4fc3be (diff) | |
download | spike-7d3a84f71666cb9669b57abf093b45c317c8d5a9.zip spike-7d3a84f71666cb9669b57abf093b45c317c8d5a9.tar.gz spike-7d3a84f71666cb9669b57abf093b45c317c8d5a9.tar.bz2 |
softfloat: add f[16|32|64]_[min|max]
Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
Diffstat (limited to 'softfloat')
-rw-r--r-- | softfloat/fall_max.c | 81 | ||||
-rw-r--r-- | softfloat/softfloat.h | 6 | ||||
-rw-r--r-- | softfloat/softfloat.mk.in | 1 |
3 files changed, 88 insertions, 0 deletions
diff --git a/softfloat/fall_max.c b/softfloat/fall_max.c new file mode 100644 index 0000000..08f1d40 --- /dev/null +++ b/softfloat/fall_max.c @@ -0,0 +1,81 @@ + +/*============================================================================ + +This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic +Package, Release 3d, by John R. Hauser. + +Copyright 2011, 2012, 2013, 2014, 2015, 2016 The Regents of the University of +California. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions, and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions, and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + 3. Neither the name of the University nor the names of its contributors may + be used to endorse or promote products derived from this software without + specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY +EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE +DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +=============================================================================*/ + +#include <stdio.h> +#include <stdbool.h> +#include <stdint.h> +#include "platform.h" +#include "internals.h" +#include "specialize.h" +#include "softfloat.h" + +#define COMPARE_MAX(a, b, bits) \ +float ## bits ## _t f ## bits ## _max( float ## bits ## _t a, float ## bits ## _t b ) \ +{ \ + if (isNaNF ## bits ## UI(a.v) && isNaNF ## bits ## UI(b.v)) { \ + union ui ## bits ## _f ## bits ui; \ + ui.ui = defaultNaNF ## bits ## UI; \ + return ui.f; \ + } \ + \ + bool greater = f ## bits ## _lt_quiet(b, a) || \ + (f ## bits ## _eq(b, a) && signF ## bits ## UI(b.v)); \ + \ + return greater || isNaNF ## bits ## UI((b).v) ? a : b; \ +} + +#define COMPARE_MIN(a, b, bits) \ +float ## bits ## _t f ## bits ## _min( float ## bits ## _t a, float ## bits ## _t b ) \ +{ \ + if (isNaNF ## bits ## UI(a.v) && isNaNF ## bits ## UI(b.v)) { \ + union ui ## bits ## _f ## bits ui; \ + ui.ui = defaultNaNF ## bits ## UI; \ + return ui.f; \ + } \ + \ + bool greater = f ## bits ## _lt_quiet(a, b) || \ + (f ## bits ## _eq(a, b) && signF ## bits ## UI(a.v)); \ + \ + return greater || isNaNF ## bits ## UI((b).v) ? a : b; \ +} + +COMPARE_MAX(a, b, 16); +COMPARE_MAX(a, b, 32); +COMPARE_MAX(a, b, 64); + +COMPARE_MIN(a, b, 16); +COMPARE_MIN(a, b, 32); +COMPARE_MIN(a, b, 64); diff --git a/softfloat/softfloat.h b/softfloat/softfloat.h index b277281..ddc39e3 100644 --- a/softfloat/softfloat.h +++ b/softfloat/softfloat.h @@ -160,6 +160,8 @@ void f16_to_f128M( float16_t, float128_t * ); float16_t f16_roundToInt( float16_t, uint_fast8_t, bool ); float16_t f16_add( float16_t, float16_t ); float16_t f16_sub( float16_t, float16_t ); +float16_t f16_max( float16_t, float16_t ); +float16_t f16_min( float16_t, float16_t ); float16_t f16_mul( float16_t, float16_t ); float16_t f16_mulAdd( float16_t, float16_t, float16_t ); float16_t f16_div( float16_t, float16_t ); @@ -195,6 +197,8 @@ void f32_to_f128M( float32_t, float128_t * ); float32_t f32_roundToInt( float32_t, uint_fast8_t, bool ); float32_t f32_add( float32_t, float32_t ); float32_t f32_sub( float32_t, float32_t ); +float32_t f32_max( float32_t, float32_t ); +float32_t f32_min( float32_t, float32_t ); float32_t f32_mul( float32_t, float32_t ); float32_t f32_mulAdd( float32_t, float32_t, float32_t ); float32_t f32_div( float32_t, float32_t ); @@ -231,6 +235,8 @@ void f64_to_f128M( float64_t, float128_t * ); float64_t f64_roundToInt( float64_t, uint_fast8_t, bool ); float64_t f64_add( float64_t, float64_t ); float64_t f64_sub( float64_t, float64_t ); +float64_t f64_max( float64_t, float64_t ); +float64_t f64_min( float64_t, float64_t ); float64_t f64_mul( float64_t, float64_t ); float64_t f64_mulAdd( float64_t, float64_t, float64_t ); float64_t f64_div( float64_t, float64_t ); diff --git a/softfloat/softfloat.mk.in b/softfloat/softfloat.mk.in index ff7637b..a1bdcf5 100644 --- a/softfloat/softfloat.mk.in +++ b/softfloat/softfloat.mk.in @@ -117,6 +117,7 @@ softfloat_c_srcs = \ f64_to_ui32_r_minMag.c \ f64_to_ui64.c \ f64_to_ui64_r_minMag.c \ + fall_max.c \ i32_to_f128.c \ i32_to_f16.c \ i32_to_f32.c \ |