Utilities

 

libsimdpp

Types

Capabilities

Operations

Conversions

Bitwise operations

Floating-point operations

Integer operations

Memory access operations

Shuffle operations

Miscellaneous operations

 

Utilities

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Alignment

SIMDPP_ALIGN(N)	when used immediately before the declaration of a variable, results in it being aligned to N bytes (function macro)
aligned_allocator	a standard allocator that allocates aligned memory (class template)

Vector size macros

SIMDPP_FAST_INT8_SIZE	optimal number of elements in int8, uint8 and mask_int8 vectors (macro constant)
SIMDPP_FAST_INT16_SIZE	optimal number of elements in int16, uint16 and mask_int16 vectors (macro constant)
SIMDPP_FAST_INT32_SIZE	optimal number of elements in int32, uint32 and mask_int32 vectors (macro constant)
SIMDPP_FAST_INT64_SIZE	optimal number of elements in int64, uint64 and mask_int64 vectors (macro constant)
SIMDPP_FAST_FLOAT32_SIZE	optimal number of elements in float32 and mask_float32 vectors (macro constant)
SIMDPP_FAST_FLOAT64_SIZE	optimal number of elements in float64 and mask_float64 vectors (macro constant)

Enabled instruction set

The following higher-level interface is provided to query enabled instruction sets.

Arch	bitmask type that describes a set of instruction sets (enum)
this_compile_arch	queries currently enabled instruction sets (function)

A low-level, macro-based interface is also provided. It's mostly useful when a fallback to native intrinsics is needed for part of the code path.

The following macros differ from the user-defined instruction set selection macros in that regardless of what the latter expand to, the former always expand to 0 or 1.

Architecture
SIMDPP_32_BITS	1 if compiling for 32-bit architecture, 0 otherwise (macro constant)
SIMDPP_64_BITS	1 if compiling for 64-bit architecture is available, 0 otherwise (macro constant)
SIMDPP_X86	1 if compiling for x86, 0 otherwise (macro constant)
SIMDPP_ARM	1 if compiling for ARM, 0 otherwise (macro constant)
SIMDPP_PPC	1 if compiling for PowerPC, 0 otherwise (macro constant)
SIMDPP_MIPS	1 if compiling for MIPS, 0 otherwise (macro constant)
Instruction sets
SIMDPP_USE_NULL	1 if SIMD instruction set is available, 0 otherwise (macro constant)
SIMDPP_USE_SSE2	1 if SSE2 is available, 0 otherwise (macro constant)
SIMDPP_USE_SSE3	1 if SSE3 is available, 0 otherwise (macro constant)
SIMDPP_USE_SSSE3	1 if SSSE3 is available, 0 otherwise (macro constant)
SIMDPP_USE_SSE4_1	1 if SSE4.1 is available, 0 otherwise (macro constant)
SIMDPP_USE_X86_POPCNT_INSN	1 if popcnt instruction is available, 0 otherwise (macro constant)
SIMDPP_USE_AVX	1 if AVX is available, 0 otherwise (macro constant)
SIMDPP_USE_FMA3	1 if FMA3 is available, 0 otherwise (macro constant)
SIMDPP_USE_FMA4	1 if FMA4 is available, 0 otherwise (macro constant)
SIMDPP_USE_XOP	1 if XOP is available, 0 otherwise (macro constant)
SIMDPP_USE_AVX2	1 if AVX2 is available, 0 otherwise (macro constant)
SIMDPP_USE_AVX512F	1 if AVX512F is available, 0 otherwise (macro constant)
SIMDPP_USE_AVX512BW	1 if AVX512BW is available, 0 otherwise (macro constant)
SIMDPP_USE_AVX512DQ	1 if AVX512DQ is available, 0 otherwise (macro constant)
SIMDPP_USE_AVX512VL	1 if AVX512VL is available, 0 otherwise (macro constant)
SIMDPP_USE_NEON	1 if NEON except floating-point support is available, 0 otherwise (macro constant)
SIMDPP_USE_NEON_FLT_SP	1 if NEON with floating-point support is available, 0 otherwise (macro constant)
SIMDPP_USE_ALTIVEC	1 if Altivec is available, 0 otherwise (macro constant)
SIMDPP_USE_VSX_206	1 if Power 2.06 VSX is available, 0 otherwise (macro constant)
SIMDPP_USE_VSX_207	1 if Power 2.07 VSX is available, 0 otherwise (macro constant)