[Libclc-dev] [PATCH 7/8] Implement half_rsqrt builtin

Aaron Watry awatry at gmail.com
Thu Mar 12 18:44:22 PDT 2015 

LGTM

On Fri, Mar 6, 2015 at 7:01 PM, Tom Stellard <thomas.stellard at amd.com>
wrote:

> This is a generic implementation which just calls rsqrt.
> Targets should override this if they want a faster implementation.
> ---
>  generic/include/clc/clc.h             |  1 +
>  generic/include/clc/math/half_rsqrt.h | 31 +++++++++++++++++++++++++++++++
>  generic/lib/SOURCES                   |  1 +
>  generic/lib/math/half_rsqrt.cl        | 30 ++++++++++++++++++++++++++++++
>  generic/lib/math/half_rsqrt.inc       | 25 +++++++++++++++++++++++++
>  5 files changed, 88 insertions(+)
>  create mode 100644 generic/include/clc/math/half_rsqrt.h
>  create mode 100644 generic/lib/math/half_rsqrt.cl
>  create mode 100644 generic/lib/math/half_rsqrt.inc
>
> diff --git a/generic/include/clc/clc.h b/generic/include/clc/clc.h
> index 0b897fa..20ced60 100644
> --- a/generic/include/clc/clc.h
> +++ b/generic/include/clc/clc.h
> @@ -48,6 +48,7 @@
>  #include <clc/math/fmax.h>
>  #include <clc/math/fmin.h>
>  #include <clc/math/fmod.h>
> +#include <clc/math/half_rsqrt.h>
>  #include <clc/math/half_sqrt.h>
>  #include <clc/math/hypot.h>
>  #include <clc/math/log.h>
> diff --git a/generic/include/clc/math/half_rsqrt.h
> b/generic/include/clc/math/half_rsqrt.h
> new file mode 100644
> index 0000000..e367d82
> --- /dev/null
> +++ b/generic/include/clc/math/half_rsqrt.h
> @@ -0,0 +1,31 @@
> +/*
> + * Copyright (c) 2014,2015 Advanced Micro Devices, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining
> a copy
> + * of this software and associated documentation files (the "Software"),
> to deal
> + * in the Software without restriction, including without limitation the
> rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or
> sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be
> included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
> SHALL THE
> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> ARISING FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> IN
> + * THE SOFTWARE.
> + */
> +
> +#undef half_rsqrt
> +
> +#define __CLC_BODY <clc/math/unary_decl.inc>
> +#define __CLC_FUNCTION half_rsqrt
> +
> +#include <clc/math/gentype.inc>
> +
> +#undef __CLC_BODY
> +#undef __CLC_FUNCTION
> diff --git a/generic/lib/SOURCES b/generic/lib/SOURCES
> index f4e054a..554dcbb 100644
> --- a/generic/lib/SOURCES
> +++ b/generic/lib/SOURCES
> @@ -66,6 +66,7 @@ math/copysign.cl
>  math/cos.cl
>  math/exp.cl
>  math/exp10.cl
> +math/half_rsqrt.cl
>  math/half_sqrt.cl
>  math/fmax.cl
>  math/fmin.cl
> diff --git a/generic/lib/math/half_rsqrt.cl b/generic/lib/math/
> half_rsqrt.cl
> new file mode 100644
> index 0000000..85695b0
> --- /dev/null
> +++ b/generic/lib/math/half_rsqrt.cl
> @@ -0,0 +1,30 @@
> +/*
> + * Copyright (c) 2014,2015 Advanced Micro Devices, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining
> a copy
> + * of this software and associated documentation files (the "Software"),
> to deal
> + * in the Software without restriction, including without limitation the
> rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or
> sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be
> included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
> SHALL THE
> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> ARISING FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> IN
> + * THE SOFTWARE.
> + */
> +
> +#include <clc/clc.h>
> +
> +#ifdef cl_khr_fp64
> +#pragma OPENCL EXTENSION cl_khr_fp64 : enable
> +#endif
> +
> +#define __CLC_BODY <half_rsqrt.inc>
> +#include <clc/math/gentype.inc>
> diff --git a/generic/lib/math/half_rsqrt.inc
> b/generic/lib/math/half_rsqrt.inc
> new file mode 100644
> index 0000000..33ce6c2
> --- /dev/null
> +++ b/generic/lib/math/half_rsqrt.inc
> @@ -0,0 +1,25 @@
> +/*
> + * Copyright (c) 2014,2015 Advanced Micro Devices, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining
> a copy
> + * of this software and associated documentation files (the "Software"),
> to deal
> + * in the Software without restriction, including without limitation the
> rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or
> sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be
> included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
> SHALL THE
> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> ARISING FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> IN
> + * THE SOFTWARE.
> + */
> +
> +_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE half_rsqrt(__CLC_GENTYPE val) {
> +  return rsqrt(val);
> +}
> --
> 2.0.4
>
>
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