mirror of
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268 lines
5.3 KiB
C
268 lines
5.3 KiB
C
/* sat_arithmetic.c -- Builtins for HSAIL saturating arithmetic instructions.
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Copyright (C) 2015-2017 Free Software Foundation, Inc.
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Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com>
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for General Processor Tech.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files
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(the "Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdint.h>
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uint8_t
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__hsail_sat_add_u8 (uint8_t a, uint8_t b)
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{
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uint16_t c = (uint16_t) a + (uint16_t) b;
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if (c > UINT8_MAX)
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return UINT8_MAX;
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else
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return c;
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}
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uint16_t
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__hsail_sat_add_u16 (uint16_t a, uint16_t b)
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{
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uint32_t c = (uint32_t) a + (uint32_t) b;
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if (c > UINT16_MAX)
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return UINT16_MAX;
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else
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return c;
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}
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uint32_t
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__hsail_sat_add_u32 (uint32_t a, uint32_t b)
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{
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uint32_t c;
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if (__builtin_add_overflow (a, b, &c))
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return UINT32_MAX;
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return c;
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}
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uint64_t
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__hsail_sat_add_u64 (uint64_t a, uint64_t b)
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{
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uint64_t c;
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if (__builtin_add_overflow (a, b, &c))
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return UINT64_MAX;
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return c;
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}
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int8_t
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__hsail_sat_add_s8 (int8_t a, int8_t b)
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{
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int16_t c = (int16_t) a + (int16_t) b;
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if (c > INT8_MAX)
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return INT8_MAX;
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else if (c < INT8_MIN)
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return INT8_MIN;
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else
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return c;
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}
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int16_t
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__hsail_sat_add_s16 (int16_t a, int16_t b)
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{
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int32_t c = (int32_t) a + (int32_t) b;
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if (c > INT16_MAX)
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return INT16_MAX;
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else if (c < INT16_MIN)
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return INT16_MIN;
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else
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return c;
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}
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int32_t
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__hsail_sat_add_s32 (int32_t a, int32_t b)
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{
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int32_t c;
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if (__builtin_add_overflow (a, b, &c))
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return b < 0 ? INT32_MIN : INT32_MAX;
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return c;
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}
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int64_t
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__hsail_sat_add_s64 (int64_t a, int64_t b)
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{
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int64_t c;
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if (__builtin_add_overflow (a, b, &c))
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return b < 0 ? INT64_MIN : INT64_MAX;
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return c;
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}
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uint8_t
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__hsail_sat_sub_u8 (uint8_t a, uint8_t b)
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{
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int16_t c = (uint16_t) a - (uint16_t) b;
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if (c < 0)
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return 0;
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else
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return c;
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}
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uint16_t
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__hsail_sat_sub_u16 (uint16_t a, uint16_t b)
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{
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int32_t c = (uint32_t) a - (uint32_t) b;
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if (c < 0)
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return 0;
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else
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return c;
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}
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uint32_t
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__hsail_sat_sub_u32 (uint32_t a, uint32_t b)
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{
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uint32_t c;
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if (__builtin_sub_overflow (a, b, &c))
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return 0;
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return c;
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}
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uint64_t
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__hsail_sat_sub_u64 (uint64_t a, uint64_t b)
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{
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uint64_t c;
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if (__builtin_sub_overflow (a, b, &c))
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return 0;
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return c;
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}
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int8_t
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__hsail_sat_sub_s8 (int8_t a, int8_t b)
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{
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int16_t c = (int16_t) a - (int16_t) b;
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if (c > INT8_MAX)
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return INT8_MAX;
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else if (c < INT8_MIN)
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return INT8_MIN;
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else
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return c;
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}
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int16_t
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__hsail_sat_sub_s16 (int16_t a, int16_t b)
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{
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int32_t c = (int32_t) a - (int32_t) b;
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if (c > INT16_MAX)
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return INT16_MAX;
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else if (c < INT16_MIN)
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return INT16_MIN;
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else
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return c;
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}
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int32_t
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__hsail_sat_sub_s32 (int32_t a, int32_t b)
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{
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int32_t c;
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if (__builtin_sub_overflow (a, b, &c))
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return b < 0 ? INT32_MAX : INT32_MIN;
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return c;
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}
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int64_t
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__hsail_sat_sub_s64 (int64_t a, int64_t b)
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{
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int64_t c;
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if (__builtin_sub_overflow (a, b, &c))
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return b < 0 ? INT64_MAX : INT64_MIN;
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return c;
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}
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uint8_t
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__hsail_sat_mul_u8 (uint8_t a, uint8_t b)
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{
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uint16_t c = (uint16_t) a * (uint16_t) b;
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if (c > UINT8_MAX)
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return UINT8_MAX;
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else
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return c;
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}
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uint16_t
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__hsail_sat_mul_u16 (uint16_t a, uint16_t b)
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{
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uint32_t c = (uint32_t) a * (uint32_t) b;
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if (c > UINT16_MAX)
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return UINT16_MAX;
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else
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return c;
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}
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uint32_t
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__hsail_sat_mul_u32 (uint32_t a, uint32_t b)
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{
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uint32_t c;
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if (__builtin_mul_overflow (a, b, &c))
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return UINT32_MAX;
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return c;
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}
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uint64_t
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__hsail_sat_mul_u64 (uint64_t a, uint64_t b)
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{
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uint64_t c;
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if (__builtin_mul_overflow (a, b, &c))
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return UINT64_MAX;
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return c;
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}
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int8_t
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__hsail_sat_mul_s8 (int8_t a, int8_t b)
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{
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int16_t c = (int16_t) a * (int16_t) b;
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if (c > INT8_MAX)
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return INT8_MAX;
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else if (c < INT8_MIN)
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return INT8_MIN;
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else
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return c;
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}
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int16_t
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__hsail_sat_mul_s16 (int16_t a, int16_t b)
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{
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int32_t c = (int32_t) a * (int32_t) b;
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if (c > INT16_MAX)
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return INT16_MAX;
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else if (c < INT16_MIN)
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return INT16_MIN;
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else
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return c;
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}
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int32_t
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__hsail_sat_mul_s32 (int32_t a, int32_t b)
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{
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int32_t c;
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if (__builtin_mul_overflow (a, b, &c))
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return ((a > 0) ^ (b > 0)) ? INT32_MIN : INT32_MAX;
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return c;
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}
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int64_t
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__hsail_sat_mul_s64 (int64_t a, int64_t b)
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{
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int64_t c;
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if (__builtin_mul_overflow (a, b, &c))
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return ((a > 0) ^ (b > 0)) ? INT64_MIN : INT64_MAX;
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return c;
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}
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