-
- Downloads
Fix for Trac ticket #1.
Instead of having scale-exponent scale the number and using the scaled number for printing, have flonum-to-string scale the number for us. There is no loss in precision in flonum-to-string, so we don't have round-off errors in printing the number. This means (format nil "~E" 1.234567890123456789d4) is printed as "1.2345678901234567d+4" instead of "1.2345678901234565d+0". Then prin1 and ~E both call flonum-to-digits with exactly the same number, so prin1 and ~E should have the same printed result. These tests pass: (assert (string= (format nil "~9,4,,-7E" pi) ".00000003d+8")) (assert (string= (format nil "~9,4,,-5E" pi) ".000003d+6")) (assert (string= (format nil "~5,4,,7E" pi) "3141600.d-6")) (assert (string= (format nil "~11,4,,3E" pi) " 314.16d-2")) (assert (string= (format nil "~11,4,,5E" pi) " 31416.d-4")) (assert (string= (format nil "~11,4,,0E" pi) " 0.3142d+1")) (assert (string= (format nil "~9,,,-1E" pi) ".03142d+2")) (assert (string= (format nil "~,,,-2E" pi) "0.003141592653589793d+3")) (assert (string= (format nil "~,,,2E" pi) "31.41592653589793d-1")) (assert (string= (format nil "~E" pi) "3.141592653589793d+0")) (assert (string= (format nil "~9,5,,-1E" pi) ".03142d+2")) (assert (string= (format nil "~11,5,,-1E" pi) " 0.03142d+2")) (assert (string= (format nil "~G" pi) "3.141592653589793 ")) (assert (string= (format nil "~9,5G" pi) "3.1416 ")) (assert (string= (format nil "|~13,6,2,7E|" pi) "| 3141593.d-06|")) (assert (string= (format nil "~9,3,2,0,'%E" pi) "0.314d+01")) (assert (string= (format nil "~9,0,6f" pi) " 3141593.")) (assert (string= (format nil "~6,2,1,'*F" pi) " 31.42")) (assert (string= (format nil "~6,2,1,'*F" (* 100 pi)) "******")) (assert (string= (format nil "~9,3,2,-2,'%@E" pi) "+.003d+03")) (assert (string= (format nil "~10,3,2,-2,'%@E" pi) "+0.003d+03")) (assert (string= (format nil "~15,3,2,-2,'%,'=@E" pi) "=====+0.003d+03")) (assert (string= (format nil "~9,3,2,-2,'%E" pi) "0.003d+03")) (assert (string= (format nil "~8,3,2,-2,'%@E" pi) "%%%%%%%%")) (assert (string= (format nil "~g" 1e0) "1. ")) (assert (string= (format nil "~g" 1.2d40) "12000000000000000000000000000000000000000. ")) (assert (string= (format nil "~e" 0) "0.0e+0")) (assert (string= (format nil "~e" 0d0) "0.0d+0")) (assert (string= (format nil "~9,,4e" 0d0) "0.0d+0000")) (assert (string= (format nil "~E" 1.234567890123456789d4) "1.2345678901234567d+0"))
Loading
Please register or sign in to comment