<para> | |
The vector versions of the math functions operate component-wise. | |
The description is per-component. | |
</para> | |
<para> | |
The built-in math functions are not affected by the prevailing rounding | |
mode in the calling environment, and always return the same value as they | |
would if called with the round to nearest even rounding mode. | |
</para> | |
<para> | |
The built-in math functions take scalar or vector arguments. The generic type | |
name <type>gentype</type> is used to indicate that the function can take | |
<type>float</type>, <type>float2</type>, <type>float3</type>, <type>float4</type>, | |
<type>float8</type>, or <type>float16</type> as the type for the arguments. For | |
any specific use of these function, the actual type has to be the same for all | |
arguments and the return type. | |
</para> | |
<para> | |
If extended with <citerefentry><refentrytitle>cl_khr_fp64</refentrytitle></citerefentry>, | |
generic type name <type>gentype</type> may indicate <type>double</type> and | |
<type>double{2|3|4|8|16}</type> as arguments and return values. If extended with | |
<citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>, generic type | |
name <type>gentype</type> may indicate <type>half</type> and <type>half{2|3|4|8|16}</type> | |
as arguments and return values. | |
</para> |