feature_test_macros

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feature_test_macros(7)	referred by	a64l(3) \| abs(3) \| accept(2) \| access(2) \| acct(2) \| acos(3) \| acosh(3) \| addseverity(3) \| adjtime(3) \| aio_init(3) \| asin(3) \| asinh(3) \| asprintf(3) \| assert_perror(3) \| atan(3) \| atan2(3) \| atanh(3) \| atoi(3) \| basename(3) \| brk(2)
feature_test_macros(7)	refer to	acct(2) \| cat(3tcl) \| fseek(3) \| fseeko(3) \| gets(3) \| libc(7) \| memcpy(3) \| memset(3) \| open(2) \| printf(3) \| readahead(2) \| standards(7) \| stpcpy(3) \| strcat(3) \| strcpy(3)