Workaround for broken (or missing) bc.

	@echo starting big number library test, could take a while...

	@./$(BNTEST) >tmp.bntest

	@echo quit >>tmp.bntest

	@echo "running bc"

	@bc tmp.bntest 2>&1 | $(PERL) -e 'while (<STDIN>) {if (/^test (.*)/) {print STDERR "\nverify $$1";} elsif (!/^0$$/) {die "\nFailed! bc: $$_";} print STDERR "."; $$i++;} print STDERR "\n$$i tests passed\n"'

	@if sh ./bctest; then \

	    echo "running bc"; \

	    bc tmp.bntest 2>&1 | $(PERL) -e 'while (<STDIN>) {if (/^test (.*)/) {print STDERR "\nverify $$1";} elsif (!/^0$$/) {die "\nFailed! bc: $$_";} print STDERR "."; $$i++;} print STDERR "\n$$i tests passed\n"'; \

	else \

	    echo "skipping bc-based verification"; \

	fi

	@echo 'test a^b%c implementations'

	./$(EXPTEST)

#!/bin/sh

if [ 0 != "`bc <<\EOF

obase=16

ibase=16

a=AD88C418F31B3FC712D0425001D522B3AE9134FF3A98C13C1FCC1682211195406C1A6C66C6A\

CEEC1A0EC16950233F77F1C2F2363D56DD71A36C57E0B2511FC4BA8F22D261FE2E9356D99AF57\

10F3817C0E05BF79C423C3F66FDF321BE8D3F18F625D91B670931C1EF25F28E489BDA1C5422D1\

C3F6F7A1AD21585746ECC4F10A14A778AF56F08898E965E9909E965E0CB6F85B514150C644759\

3BE731877B16EA07B552088FF2EA728AC5E0FF3A23EB939304519AB8B60F2C33D6BA0945B66F0\

4FC3CADF855448B24A9D7640BCF473E

b=DCE91E7D120B983EA9A104B5A96D634DD644C37657B1C7860B45E6838999B3DCE5A555583C6\

9209E41F413422954175A06E67FFEF6746DD652F0F48AEFECC3D8CAC13523BDAAD3F5AF4212BD\

8B3CD64126E1A82E190228020C05B91C8B141F1110086FC2A4C6ED631EBA129D04BB9A19FC53D\

3ED0E2017D60A68775B75481449

(a/b)*b + (a%b) - a

EOF`" ]

then

  echo "bc does not work.  Consider installing GNU bc." >&2

  exit 1

else

  exit 0

fi