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The __ARM_NEON declares that the arm_neon.h is available which is not always true for the __ARM_NEON_FP. $ arm-linux-gnueabi-gcc -dM -E - < /dev/null | grep "_FP\|_NEON" #define __ARM_FP 12 #define __ARM_NEON_FP 4 #define __VFP_FP__ 1 $ arm-linux-gnueabi-gcc -mfpu=neon -dM -E - < /dev/null | grep "_FP\|_NEON" #define __ARM_FP 12 #define __ARM_NEON_FP 4 #define __ARM_NEON__ 1 #define __VFP_FP__ 1 #define __ARM_NEON 1 $ aarch64-linux-gnu-gcc -dM -E - < /dev/null | grep "NEON\|FP" #define __FP_FAST_FMAF 1 #define __ARM_NEON 1 #define __FP_FAST_FMA 1 $ aarch64-thunderx-linux-gnu-gcc -dM -E - < /dev/null |grep "NEON\|FP" #define __ARM_FP 12 #define __ARM_NEON_FP 12 #define __FP_FAST_FMAF 1 #define __ARM_NEON 1 #define __FP_FAST_FMA 1 Signed-off-by: Jan Viktorin <viktorin@rehivetech.com> Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD license for the core libraries and drivers. The kernel components are GPLv2 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org