[Libclc-dev] [PATCH] Fix definition of INFINITY and add NAN/HUGE_VAL[F]

[Matt Arsenault]

On Jun 11, 2014, at 4:34 PM, Aaron Watry <awatry at gmail.com> wrote:

> v2: use __builtin_inff() and also add nan/huge_val definitions
> 
> Signed-off-by: Aaron Watry <awatry at gmail.com>
> ---
> generic/include/clc/float/definitions.h | 6 ++++++
> generic/lib/gen_convert.py              | 2 --
> 2 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/generic/include/clc/float/definitions.h b/generic/include/clc/float/definitions.h
> index af54fdf..c286bb9 100644
> --- a/generic/include/clc/float/definitions.h
> +++ b/generic/include/clc/float/definitions.h
> @@ -1,3 +1,7 @@
> +#define INFINITY __builtin_inff()
> +#define NAN __builtin_nanf()
> +#define HUGE_VALF __builtin_huge_valf()


I’m getting an error when I try to use this. Apparently __builtin_nanf expects a string argument

4 errors generated.
95:          divide		FAILED -- clBuildProgram() failed: (-11)
Log: input.cl:18:40: error: too few arguments to function call, expected 1, have 0
               f0 = (float3)( in[3*i], NAN, NAN );
                                       ^~~
/usr/local/include/clc/float/definitions.h:2:28: note: expanded from macro 'NAN'
#define NAN __builtin_nanf()
            ~~~~~~~~~~~~~~ ^
input.cl:19:41: error: too few arguments to function call, expected 1, have 0
               f1 = (float3)( in2[3*i], NAN, NAN );
                                        ^~~
/usr/local/include/clc/float/definitions.h:2:28: note: expanded from macro 'NAN'
#define NAN __builtin_nanf()
            ~~~~~~~~~~~~~~ ^
input.cl:22:51: error: too few arguments to function call, expected 1, have 0
               f0 = (float3)( in[3*i], in[3*i+1], NAN );
                                                  ^~~
/usr/local/include/clc/float/definitions.h:2:28: note: expanded from macro 'NAN'
#define NAN __builtin_nanf()
            ~~~~~~~~~~~~~~ ^
input.cl:23:53: error: too few arguments to function call, expected 1, have 0
               f1 = (float3)( in2[3*i], in2[3*i+1], NAN );
                                                    ^~~
/usr/local/include/clc/float/definitions.h:2:28: note: expanded from macro 'NAN'
#define NAN __builtin_nanf()
            ~~~~~~~~~~~~~~ ^