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author | Han-Kuan Chen <hankuan.chen@sifive.com> | 2020-03-24 19:39:36 -0700 |
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committer | Chih-Min Chao <chihmin.chao@sifive.com> | 2020-05-04 09:50:05 -0700 |
commit | 2b38341691cae78d1e06c9e80af1944d4c7aa0e5 (patch) | |
tree | bb996497242425f1f21025f53c593c4cce744b52 | |
parent | b6432b1edf368b38661d00e0f2b7fe672d09bd72 (diff) | |
download | riscv-isa-sim-2b38341691cae78d1e06c9e80af1944d4c7aa0e5.zip riscv-isa-sim-2b38341691cae78d1e06c9e80af1944d4c7aa0e5.tar.gz riscv-isa-sim-2b38341691cae78d1e06c9e80af1944d4c7aa0e5.tar.bz2 |
sf: fp16: add missing APIs
Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
-rwxr-xr-x | softfloat/f16_classify.c | 36 | ||||
-rw-r--r-- | softfloat/f16_to_i16.c | 55 | ||||
-rw-r--r-- | softfloat/f16_to_ui16.c | 52 | ||||
-rw-r--r-- | softfloat/f32_to_i16.c | 55 | ||||
-rw-r--r-- | softfloat/f32_to_ui16.c | 51 | ||||
-rw-r--r-- | softfloat/softfloat.h | 5 | ||||
-rw-r--r-- | softfloat/softfloat.mk.in | 5 | ||||
-rw-r--r-- | softfloat/specialize.h | 7 |
8 files changed, 266 insertions, 0 deletions
diff --git a/softfloat/f16_classify.c b/softfloat/f16_classify.c new file mode 100755 index 0000000..9402ff1 --- /dev/null +++ b/softfloat/f16_classify.c @@ -0,0 +1,36 @@ + +#include <stdbool.h> +#include <stdint.h> +#include "platform.h" +#include "internals.h" +#include "specialize.h" +#include "softfloat.h" + +uint_fast16_t f16_classify( float16_t a ) +{ + union ui16_f16 uA; + uint_fast16_t uiA; + + uA.f = a; + uiA = uA.ui; + + uint_fast16_t infOrNaN = expF16UI( uiA ) == 0x1F; + uint_fast16_t subnormalOrZero = expF16UI( uiA ) == 0; + bool sign = signF16UI( uiA ); + bool fracZero = fracF16UI( uiA ) == 0; + bool isNaN = isNaNF16UI( uiA ); + bool isSNaN = softfloat_isSigNaNF16UI( uiA ); + + return + ( sign && infOrNaN && fracZero ) << 0 | + ( sign && !infOrNaN && !subnormalOrZero ) << 1 | + ( sign && subnormalOrZero && !fracZero ) << 2 | + ( sign && subnormalOrZero && fracZero ) << 3 | + ( !sign && infOrNaN && fracZero ) << 7 | + ( !sign && !infOrNaN && !subnormalOrZero ) << 6 | + ( !sign && subnormalOrZero && !fracZero ) << 5 | + ( !sign && subnormalOrZero && fracZero ) << 4 | + ( isNaN && isSNaN ) << 8 | + ( isNaN && !isSNaN ) << 9; +} + diff --git a/softfloat/f16_to_i16.c b/softfloat/f16_to_i16.c new file mode 100644 index 0000000..0ec7ce1 --- /dev/null +++ b/softfloat/f16_to_i16.c @@ -0,0 +1,55 @@ + +/*============================================================================ + +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, 2017 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 <stdint.h> +#include "specialize.h" +#include "softfloat.h" + +int_fast16_t f16_to_i16( float16_t a, uint_fast8_t roundingMode, bool exact ) +{ + int_fast32_t sig32 = f16_to_i32(a, roundingMode, exact); + + if (sig32 > INT16_MAX) { + softfloat_exceptionFlags |= softfloat_flag_invalid; + return i16_fromPosOverflow; + } else if (sig32 < INT16_MIN) { + softfloat_exceptionFlags |= softfloat_flag_invalid; + return i16_fromNegOverflow; + } else { + return sig32; + } +} + diff --git a/softfloat/f16_to_ui16.c b/softfloat/f16_to_ui16.c new file mode 100644 index 0000000..818328a --- /dev/null +++ b/softfloat/f16_to_ui16.c @@ -0,0 +1,52 @@ + +/*============================================================================ + +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, 2017 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 <stdint.h> +#include "specialize.h" +#include "softfloat.h" + +uint_fast16_t f16_to_ui16( float16_t a, uint_fast8_t roundingMode, bool exact ) +{ + uint_fast32_t sig32 = f16_to_ui32(a, roundingMode, exact); + + if (sig32 > UINT16_MAX) { + softfloat_exceptionFlags |= softfloat_flag_invalid; + return ui16_fromPosOverflow; + } else { + return sig32; + } +} + diff --git a/softfloat/f32_to_i16.c b/softfloat/f32_to_i16.c new file mode 100644 index 0000000..14ebc6b --- /dev/null +++ b/softfloat/f32_to_i16.c @@ -0,0 +1,55 @@ + +/*============================================================================ + +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, 2017 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 <stdint.h> +#include "specialize.h" +#include "softfloat.h" + +int_fast16_t f32_to_i16( float32_t a, uint_fast8_t roundingMode, bool exact ) +{ + int_fast32_t sig32 = f32_to_i32(a, roundingMode, exact); + + if (sig32 > INT16_MAX) { + softfloat_exceptionFlags |= softfloat_flag_invalid; + return i16_fromPosOverflow; + } else if (sig32 < INT16_MIN) { + softfloat_exceptionFlags |= softfloat_flag_invalid; + return i16_fromNegOverflow; + } else { + return sig32; + } +} + diff --git a/softfloat/f32_to_ui16.c b/softfloat/f32_to_ui16.c new file mode 100644 index 0000000..a8f458d --- /dev/null +++ b/softfloat/f32_to_ui16.c @@ -0,0 +1,51 @@ + +/*============================================================================ + +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, 2017 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 <stdint.h> +#include "specialize.h" +#include "softfloat.h" + +uint_fast16_t f32_to_ui16( float32_t a, uint_fast8_t roundingMode, bool exact ) +{ + uint_fast32_t sig32 = f32_to_ui32(a, roundingMode, exact); + + if (sig32 > UINT16_MAX) { + softfloat_exceptionFlags |= softfloat_flag_invalid; + return ui16_fromPosOverflow; + } else { + return sig32; + } +} diff --git a/softfloat/softfloat.h b/softfloat/softfloat.h index ddc39e3..5579c68 100644 --- a/softfloat/softfloat.h +++ b/softfloat/softfloat.h @@ -141,8 +141,10 @@ void i64_to_f128M( int64_t, float128_t * ); /*---------------------------------------------------------------------------- | 16-bit (half-precision) floating-point operations. *----------------------------------------------------------------------------*/ +uint_fast16_t f16_to_ui16( float16_t, uint_fast8_t, bool ); uint_fast32_t f16_to_ui32( float16_t, uint_fast8_t, bool ); uint_fast64_t f16_to_ui64( float16_t, uint_fast8_t, bool ); +int_fast16_t f16_to_i16( float16_t, uint_fast8_t, bool ); int_fast32_t f16_to_i32( float16_t, uint_fast8_t, bool ); int_fast64_t f16_to_i64( float16_t, uint_fast8_t, bool ); uint_fast32_t f16_to_ui32_r_minMag( float16_t, bool ); @@ -174,12 +176,15 @@ bool f16_eq_signaling( float16_t, float16_t ); bool f16_le_quiet( float16_t, float16_t ); bool f16_lt_quiet( float16_t, float16_t ); bool f16_isSignalingNaN( float16_t ); +uint_fast16_t f16_classify( float16_t ); /*---------------------------------------------------------------------------- | 32-bit (single-precision) floating-point operations. *----------------------------------------------------------------------------*/ +uint_fast16_t f32_to_ui16( float32_t, uint_fast8_t, bool ); uint_fast32_t f32_to_ui32( float32_t, uint_fast8_t, bool ); uint_fast64_t f32_to_ui64( float32_t, uint_fast8_t, bool ); +int_fast16_t f32_to_i16( float32_t, uint_fast8_t, bool ); int_fast32_t f32_to_i32( float32_t, uint_fast8_t, bool ); int_fast64_t f32_to_i64( float32_t, uint_fast8_t, bool ); uint_fast32_t f32_to_ui32_r_minMag( float32_t, bool ); diff --git a/softfloat/softfloat.mk.in b/softfloat/softfloat.mk.in index 52ee1dd..56fc560 100644 --- a/softfloat/softfloat.mk.in +++ b/softfloat/softfloat.mk.in @@ -38,6 +38,7 @@ softfloat_c_srcs = \ f128_to_ui64.c \ f128_to_ui64_r_minMag.c \ f16_add.c \ + f16_classify.c \ f16_div.c \ f16_eq.c \ f16_eq_signaling.c \ @@ -55,10 +56,12 @@ softfloat_c_srcs = \ f16_to_f128.c \ f16_to_f32.c \ f16_to_f64.c \ + f16_to_i16.c \ f16_to_i32.c \ f16_to_i32_r_minMag.c \ f16_to_i64.c \ f16_to_i64_r_minMag.c \ + f16_to_ui16.c \ f16_to_ui32.c \ f16_to_ui32_r_minMag.c \ f16_to_ui64.c \ @@ -82,10 +85,12 @@ softfloat_c_srcs = \ f32_to_f128.c \ f32_to_f16.c \ f32_to_f64.c \ + f32_to_i16.c \ f32_to_i32.c \ f32_to_i32_r_minMag.c \ f32_to_i64.c \ f32_to_i64_r_minMag.c \ + f32_to_ui16.c \ f32_to_ui32.c \ f32_to_ui32_r_minMag.c \ f32_to_ui64.c \ diff --git a/softfloat/specialize.h b/softfloat/specialize.h index 629d518..8bd9857 100644 --- a/softfloat/specialize.h +++ b/softfloat/specialize.h @@ -55,6 +55,13 @@ extern "C" { | The values to return on conversions to 32-bit integer formats that raise an | invalid exception. *----------------------------------------------------------------------------*/ +#define ui16_fromPosOverflow 0xFFFF +#define ui16_fromNegOverflow 0 +#define ui16_fromNaN 0xFFFF +#define i16_fromPosOverflow 0x7FFF +#define i16_fromNegOverflow (-0x7FFF - 1) +#define i16_fromNaN 0x7FFF + #define ui32_fromPosOverflow 0xFFFFFFFF #define ui32_fromNegOverflow 0 #define ui32_fromNaN 0xFFFFFFFF |