While those functions are, indeed, a normative part of ISO C99 standard, it unfortunately does not follow that passing an option to gcc might cause a fully compliant environment to magically spring into existence.

OP is concerned about BSD systems; a reference to glibc manpages is simply misguided.

In reply to Re^4: [C Question] Determine if gcc provides erfl() function by Anonymous Monk
in thread [C Question] Determine if gcc provides erfl() function by syphilis

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