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author | Andrew Waterman <andrew@sifive.com> | 2024-06-20 13:00:15 -0700 |
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committer | GitHub <noreply@github.com> | 2024-06-20 13:00:15 -0700 |
commit | 5e7928a3475f3fe6a148abd74abb6d97c65c31f2 (patch) | |
tree | ed26fe6c26a09cf2eaa74e829444c02e2f6ea96a /softfloat/f64_to_bf16.c | |
parent | a826a4efd2f4ee4667ad0712b20cac459e45d66c (diff) | |
parent | fe47d091e1bd833ec0e1250df1414ace63c19cac (diff) | |
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Merge pull request #1695 from riscv-software-src/bf16-ops
Add several BF16 ops to SoftFloat
Diffstat (limited to 'softfloat/f64_to_bf16.c')
-rw-r--r-- | softfloat/f64_to_bf16.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/softfloat/f64_to_bf16.c b/softfloat/f64_to_bf16.c new file mode 100644 index 0000000..a320979 --- /dev/null +++ b/softfloat/f64_to_bf16.c @@ -0,0 +1,54 @@ + +/*============================================================================ + +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 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 <stdbool.h> +#include <stdint.h> +#include "platform.h" +#include "internals.h" +#include "specialize.h" +#include "softfloat.h" + +bfloat16_t f64_to_bf16( float64_t a ) +{ + uint_fast8_t roundingMode = softfloat_roundingMode; + softfloat_roundingMode = softfloat_round_odd; + + float32_t f32A = f64_to_f32( a ); + + softfloat_roundingMode = roundingMode; + + return f32_to_bf16( f32A ); +} |