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build_flags.md

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Build flags and config details

  • VECTORMATH_ENABLE_CLANG_EXT:

    • Compiler options: -DVECTORMATH_ENABLE_CLANG_EXT
    • Use clang vector extensions, only work with clang compiler.
    • Clang vector extensions support swizzle syntaxes.

  • VECTORMATH_SIMD_ENABLE:

    • Compiler options: -DVECTORMATH_SIMD_ENABLE
    • Prefer to use SIMD if available, autoconfig to use SSE or NEON based on target platform.

  • VECTORMATH_USE_EXACT_PRECISION:

    • Compiler options: -DVECTORMATH_USE_EXACT_PRECISION
    • Prefer good precision over fast math (currently use idSoftware FastInvSqrt)
    • Planning to do some fast trigonometric with simd instructions