This version of the Intel® C++ compiler supports the following gcc built-in functions:
__builtin_abs
__builtin_labs
__builtin_cos
__builtin_cosf
__builtin_fabs
__builtin_fabsf
__builtin_memcmp
__builtin_memcpy
__builtin_sin
__builtin_sinf
__builtin_sqrt
__builtin_sqrtf
__builtin_strcmp
__builtin_strlen
__builtin_strncmp
__builtin_abort
__builtin_prefetch
__builtin_constant_p
__builtin_printf
__builtin_fprintf
__builtin_fscanf
__builtin_scanf
__builtin_fputs
__builtin_memset
__builtin_strcat
__builtin_strcpy
__builtin_strncpy
__builtin_exit
__builtin_strchr
__builtin_strspn
__builtin_strcspn
__builtin_strstr
__builtin_strpbrk
__builtin_strrchr
__builtin_strncat
__builtin_alloca
__builtin_ffs
__builtin_index
__builtin_rindex
__builtin_bcmp
__builtin_bzero
__builtin_sinl
__builtin_cosl
__builtin_sqrtl
__builtin_fabsl
__builtin_frame_address (IA-32 only)
__builtin_return_address (IA-32 only)