[Beignet] [PATCH 2/2] test built-in function "nextafter"

[Zhigang Gong]

Tested ok, pushed, thanks.

On Tue, Jul 16, 2013 at 04:55:17PM +0800, Homer Hsing wrote:
> 
> Signed-off-by: Homer Hsing <homer.xing at intel.com>
> ---
>  kernels/builtin_nextafter.cl |  4 +++
>  utests/CMakeLists.txt        |  1 +
>  utests/builtin_nextafter.cpp | 60 ++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 65 insertions(+)
>  create mode 100644 kernels/builtin_nextafter.cl
>  create mode 100644 utests/builtin_nextafter.cpp
> 
> diff --git a/kernels/builtin_nextafter.cl b/kernels/builtin_nextafter.cl
> new file mode 100644
> index 0000000..3945e34
> --- /dev/null
> +++ b/kernels/builtin_nextafter.cl
> @@ -0,0 +1,4 @@
> +kernel void builtin_nextafter(global float *src1, global float *src2, global float *dst) {
> +  int i = get_global_id(0);
> +  dst[i] = nextafter(src1[i], src2[i]);
> +}
> diff --git a/utests/CMakeLists.txt b/utests/CMakeLists.txt
> index 6f6fb86..bbeea28 100644
> --- a/utests/CMakeLists.txt
> +++ b/utests/CMakeLists.txt
> @@ -103,6 +103,7 @@ set (utests_sources
>    builtin_bitselect.cpp
>    builtin_frexp.cpp
>    builtin_mad_sat.cpp
> +  builtin_nextafter.cpp
>    builtin_sign.cpp
>    buildin_work_dim.cpp
>    builtin_global_size.cpp
> diff --git a/utests/builtin_nextafter.cpp b/utests/builtin_nextafter.cpp
> new file mode 100644
> index 0000000..ae95497
> --- /dev/null
> +++ b/utests/builtin_nextafter.cpp
> @@ -0,0 +1,60 @@
> +#include <cmath>
> +#include <cstring>
> +#include "utest_helper.hpp"
> +
> +static int as_int(float f) {
> +  void *p = &f;
> +  return *(int *)p;
> +}
> +
> +void builtin_nextafter(void)
> +{
> +  const int n = 16;
> +  float src1[n], src2[n];
> +
> +  // Setup kernel and buffers
> +  OCL_CREATE_KERNEL("builtin_nextafter");
> +  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(float), NULL);
> +  OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(float), NULL);
> +  OCL_CREATE_BUFFER(buf[2], 0, n * sizeof(float), NULL);
> +  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
> +  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
> +  OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
> +  globals[0] = n;
> +  locals[0] = 16;
> +
> +  src1[0] = nanf(""), src2[0] = 1.1f;
> +  src1[1] = 2.2f,     src2[1] = nanf("");
> +  src1[2] = nanf(""), src2[2] = nanf("");
> +  src1[3] = 123.4f,   src2[3] = 123.4f;
> +  src1[4] = 0.f,      src2[4] = 1.f;
> +  src1[5] = -0.f,     src2[5] = -1.f;
> +  for (int i = 6; i < n; ++i) {
> +    src1[i] = (rand() & 255) * 0.1f - 12.8f;
> +    src2[i] = (rand() & 255) * 0.1f - 12.8f;
> +  }
> +
> +  OCL_MAP_BUFFER(0);
> +  OCL_MAP_BUFFER(1);
> +  memcpy(buf_data[0], src1, n * sizeof(float));
> +  memcpy(buf_data[1], src2, n * sizeof(float));
> +  OCL_UNMAP_BUFFER(0);
> +  OCL_UNMAP_BUFFER(1);
> +
> +  OCL_NDRANGE(1);
> +
> +  OCL_MAP_BUFFER(2);
> +  float *dest = (float *)buf_data[2];
> +  if (0)
> +    for (int i = 0; i < n; ++i)
> +      printf("%d %x %x %x %x\n", i, as_int(src1[i]), as_int(src2[i]),
> +             as_int(dest[i]), as_int(nextafterf(src1[i], src2[i])));
> +  OCL_ASSERT(isnanf(dest[0]));
> +  OCL_ASSERT(isnanf(dest[1]));
> +  OCL_ASSERT(isnanf(dest[2]));
> +  for (int i = 3; i < n; ++i)
> +    OCL_ASSERT(dest[i] == nextafterf(src1[i], src2[i]));
> +  OCL_UNMAP_BUFFER(2);
> +}
> +
> +MAKE_UTEST_FROM_FUNCTION(builtin_nextafter);
> -- 
> 1.8.1.2
> 
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