Fix Documentation generation

Mostly ill-named groups, missing predefined macro and some group
splitting for select operation.

Fix #1029

docs/Doxyfile

@@ -44,4 +44,4 @@ WARN_AS_ERROR = NO
 ENABLE_PREPROCESSING = YES
 MACRO_EXPANSION      = YES
 EXPAND_ONLY_PREDEF   = YES
-PREDEFINED           = XSIMD_NO_DISCARD=
+PREDEFINED           = XSIMD_NO_DISCARD= XSIMD_INLINE=inline

docs/source/api/batch_manip.rst

@@ -13,11 +13,9 @@ Conditional expression
 
 ----
 
-.. doxygenfunction:: select(batch_bool<T, A> const &cond, batch<T, A> const &true_br, batch<T, A> const &false_br) noexcept
-   :project: xsimd
-
-.. doxygenfunction:: select(batch_bool_constant<T, A, Values...> const &cond, batch<T, A> const &true_br, batch<T, A> const &false_br) noexcept
+.. doxygengroup:: batch_cond
    :project: xsimd
+   :content-only:
 
 
 In the specific case when one needs to conditionnaly increment or decrement a

docs/source/api/xsimd_batch_complex.rst

@@ -14,7 +14,7 @@ Batch of complex numbers
 Operations specific to batches of complex numbers
 -------------------------------------------------
 
-.. doxygengroup:: batch_complex_op
+.. doxygengroup:: batch_complex
    :project: xsimd
    :content-only:
 

include/xsimd/types/xsimd_api.hpp

@@ -28,13 +28,14 @@ namespace xsimd
      *
      * @defgroup batch_arithmetic Arithmetic operators
      * @defgroup batch_constant Constant batches
+     * @defgroup batch_cond Conditional operators
      * @defgroup batch_data_transfer Memory operators
      * @defgroup batch_math Basic math operators
      * @defgroup batch_math_extra Extra math operators
      * @defgroup batch_fp Floating point manipulation
      * @defgroup batch_rounding Rounding operators
      * @defgroup batch_conversion Conversion operators
-     * @defgroup batch_complex_op Complex operators
+     * @defgroup batch_complex Complex operators
      * @defgroup batch_logical Logical operators
      * @defgroup batch_bitwise Bitwise operators
      * @defgroup batch_reducers Reducers
@@ -1890,7 +1891,7 @@ namespace xsimd
     }
 
     /**
-     * @ingroup rotate_left
+     * @ingroup batch_data_transfer
      *
      * Slide the whole batch to the left by \c n bytes, and reintroduce the
      * slided out elements from the right. This is different from
@@ -1908,7 +1909,7 @@ namespace xsimd
     }
 
     /**
-     * @ingroup rotate_right
+     * @ingroup batch_data_transfer
      *
      * Slide the whole batch to the right by \c n bytes, and reintroduce the
      * slided out elements from the left. This is different from
@@ -2021,7 +2022,7 @@ namespace xsimd
     }
 
     /**
-     * @ingroup batch_miscellaneous
+     * @ingroup batch_cond
      *
      * Ternary operator for batches: selects values from the batches \c true_br or \c false_br
      * depending on the boolean values in the constant batch \c cond. Equivalent to
@@ -2042,7 +2043,7 @@ namespace xsimd
     }
 
     /**
-     * @ingroup batch_miscellaneous
+     * @ingroup batch_cond
      *
      * Ternary operator for batches: selects values from the batches \c true_br or \c false_br
      * depending on the boolean values in the constant batch \c cond. Equivalent to
@@ -2063,7 +2064,7 @@ namespace xsimd
     }
 
     /**
-     * @ingroup batch_miscellaneous
+     * @ingroup batch_cond
      *
      * Ternary operator for batches: selects values from the batches \c true_br or \c false_br
      * depending on the boolean values in the constant batch \c cond. Equivalent to