[Libclc-dev] [PATCH 1/1] Implement sinpi builtin
Tom Stellard
tom at stellard.net
Wed May 6 13:43:14 PDT 2015
On Wed, May 06, 2015 at 09:46:20AM -0400, Jan Vesely wrote:
> Ported from AMD builtin library, passes piglit on Turks.
>
LGTM.
> Signed-off-by: Jan Vesely <jan.vesely at rutgers.edu>
> ---
> generic/include/clc/clc.h | 1 +
> generic/include/clc/math/sinpi.h | 4 ++
> generic/include/clc/math/sinpi.inc | 2 +
> generic/lib/SOURCES | 1 +
> generic/lib/math/sinpi.cl | 131 +++++++++++++++++++++++++++++++++++++
> 5 files changed, 139 insertions(+)
> create mode 100644 generic/include/clc/math/sinpi.h
> create mode 100644 generic/include/clc/math/sinpi.inc
> create mode 100644 generic/lib/math/sinpi.cl
>
> diff --git a/generic/include/clc/clc.h b/generic/include/clc/clc.h
> index 3cb68bd..9e1d343 100644
> --- a/generic/include/clc/clc.h
> +++ b/generic/include/clc/clc.h
> @@ -76,6 +76,7 @@
> #include <clc/math/round.h>
> #include <clc/math/sin.h>
> #include <clc/math/sincos.h>
> +#include <clc/math/sinpi.h>
> #include <clc/math/sqrt.h>
> #include <clc/math/tan.h>
> #include <clc/math/trunc.h>
> diff --git a/generic/include/clc/math/sinpi.h b/generic/include/clc/math/sinpi.h
> new file mode 100644
> index 0000000..769250e
> --- /dev/null
> +++ b/generic/include/clc/math/sinpi.h
> @@ -0,0 +1,4 @@
> +#define __CLC_BODY <clc/math/sinpi.inc>
> +#include <clc/math/gentype.inc>
> +#undef __CLC_BODY
> +
> diff --git a/generic/include/clc/math/sinpi.inc b/generic/include/clc/math/sinpi.inc
> new file mode 100644
> index 0000000..cc0ddd2
> --- /dev/null
> +++ b/generic/include/clc/math/sinpi.inc
> @@ -0,0 +1,2 @@
> +_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE sinpi(__CLC_GENTYPE a);
> +
> diff --git a/generic/lib/SOURCES b/generic/lib/SOURCES
> index 9a22af6..37ff535 100644
> --- a/generic/lib/SOURCES
> +++ b/generic/lib/SOURCES
> @@ -103,6 +103,7 @@ math/pown.cl
> math/sin.cl
> math/sincos.cl
> math/sincos_helpers.cl
> +math/sinpi.cl
> math/tan.cl
> relational/all.cl
> relational/any.cl
> diff --git a/generic/lib/math/sinpi.cl b/generic/lib/math/sinpi.cl
> new file mode 100644
> index 0000000..bc37b23
> --- /dev/null
> +++ b/generic/lib/math/sinpi.cl
> @@ -0,0 +1,131 @@
> +/*
> + * Copyright (c) 2014 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>
> +
> +#include "math.h"
> +#include "sincospiF_piby4.h"
> +#include "../clcmacro.h"
> +#ifdef cl_khr_fp64
> +#include "sincosD_piby4.h"
> +#endif
> +
> +_CLC_OVERLOAD _CLC_DEF float sinpi(float x)
> +{
> + int ix = as_int(x);
> + int xsgn = ix & 0x80000000;
> + ix ^= xsgn;
> + float ax = as_float(ix);
> + int iax = (int)ax;
> + float r = ax - iax;
> + int xodd = xsgn ^ (iax & 0x1 ? 0x80000000 : 0);
> +
> + // Initialize with return for +-Inf and NaN
> + int ir = 0x7fc00000;
> +
> + // 2^23 <= |x| < Inf, the result is always integer
> + ir = ix < 0x7f800000 ? xsgn : ir;
> +
> + // 0x1.0p-7 <= |x| < 2^23, result depends on which 0.25 interval
> +
> + // r < 1.0
> + float a = 1.0f - r;
> + int e = 0;
> +
> + // r <= 0.75
> + int c = r <= 0.75f;
> + a = c ? r - 0.5f : a;
> + e = c ? 1 : e;
> +
> + // r < 0.5
> + c = r < 0.5f;
> + a = c ? 0.5f - r : a;
> +
> + // 0 < r <= 0.25
> + c = r <= 0.25f;
> + a = c ? r : a;
> + e = c ? 0 : e;
> +
> + float2 t = __libclc__sincosf_piby4(a * M_PI_F);
> + int jr = xodd ^ as_int(e ? t.hi : t.lo);
> +
> + ir = ix < 0x4b000000 ? jr : ir;
> +
> + return as_float(ir);
> +}
> +
> +_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, sinpi, float);
> +
> +#ifdef cl_khr_fp64
> +
> +#pragma OPENCL EXTENSION cl_khr_fp64 : enable
> +
> +_CLC_OVERLOAD _CLC_DEF double sinpi(double x)
> +{
> + long ix = as_long(x);
> + long xsgn = ix & 0x8000000000000000L;
> + ix ^= xsgn;
> + double ax = as_double(ix);
> + long iax = (long)ax;
> + double r = ax - (double)iax;
> + long xodd = xsgn ^ (iax & 0x1L ? 0x8000000000000000L : 0L);
> +
> + // Initialize with return for +-Inf and NaN
> + long ir = 0x7ff8000000000000L;
> +
> + // 2^23 <= |x| < Inf, the result is always integer
> + ir = ix < 0x7ff0000000000000 ? xsgn : ir;
> +
> + // 0x1.0p-7 <= |x| < 2^23, result depends on which 0.25 interval
> +
> + // r < 1.0
> + double a = 1.0 - r;
> + int e = 0;
> +
> + // r <= 0.75
> + int c = r <= 0.75;
> + double t = r - 0.5;
> + a = c ? t : a;
> + e = c ? 1 : e;
> +
> + // r < 0.5
> + c = r < 0.5;
> + t = 0.5 - r;
> + a = c ? t : a;
> +
> + // r <= 0.25
> + c = r <= 0.25;
> + a = c ? r : a;
> + e = c ? 0 : e;
> +
> + double api = a * M_PI;
> + double2 sc = __libclc__sincos_piby4(api, 0.0);
> + long jr = xodd ^ as_long(e ? sc.hi : sc.lo);
> +
> + ir = ax < 0x1.0p+52 ? jr : ir;
> +
> + return as_double(ir);
> +}
> +
> +_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, sinpi, double)
> +
> +#endif
> --
> 2.1.0
>
>
> _______________________________________________
> Libclc-dev mailing list
> Libclc-dev at pcc.me.uk
> http://www.pcc.me.uk/cgi-bin/mailman/listinfo/libclc-dev
More information about the Libclc-dev
mailing list