options/ansi: Expose finite() and finitef() in math.h #3318

Job	Run time
Compile sysdeps (dripos)	2m 10s
Build mlibc (x86_64, mlibc)	3m 26s
Compile sysdeps (lemon)	2m 8s
Build mlibc (x86_64, mlibc-static)	2m 55s
Compile sysdeps (aero)	2m 12s
Build mlibc (x86_64, mlibc-shared)	2m 52s
Compile sysdeps (ironclad)	2m 17s
Build mlibc (x86_64, mlibc-ansi-only)	2m 40s
Compile sysdeps (lyre)	2m 36s
Compile sysdeps (keyronex)	2m 14s
Build mlibc (x86_64, mlibc-headers-only)	1m 58s
Build mlibc (riscv64, mlibc)	3m 38s
Build mlibc (riscv64, mlibc-static)	5m 2s
Build mlibc (riscv64, mlibc-shared)	2m 52s
Build mlibc (riscv64, mlibc-ansi-only)	2m 44s
Build mlibc (riscv64, mlibc-headers-only)	2m 3s
Build mlibc (aarch64, mlibc)	3m 38s
Build mlibc (aarch64, mlibc-static)	3m 3s
Build mlibc (aarch64, mlibc-shared)	3m 9s
Build mlibc (aarch64, mlibc-ansi-only)	2m 51s
Build mlibc (aarch64, mlibc-headers-only)	2m 16s
Build mlibc (x86, mlibc)	3m 41s
Build mlibc (x86, mlibc-static)	3m 7s
Build mlibc (x86, mlibc-shared)	2m 55s
Build mlibc (x86, mlibc-ansi-only)	2m 54s
Build mlibc (x86, mlibc-headers-only)	1m 54s
	1h 13m 15s

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