# Test program for checking sprintf operation with various floating # point formats # # Watch out - full output of this program will have 3000 * tot lines, # which will take a chunk of space if you will write it to your disk. # --mj BEGIN { just = "-" plus = "+ " alt = "#" zero = "0" spec = "feEgG" fw[1] = "" fw[2] = "1" fw[3] = "5" fw[4] = "10" fw[5] = "15" prec[1] = ".-1" prec[2] = "" prec[3] = ".2" prec[4] = ".5" prec[5] = ".10" num = 123.6 factor = 1.0e-12 tot = 8 data[1] = 0 data[2] = 1 for (i = 3; i <= tot; i++) { data[i] = num * factor factor *= 1000 } for (j = 1; j <= 2; j++) { for (p = 1; p <= 3; p++) { for (a = 1; a <= 2; a++) { for (z = 1; z <= 2; z++) { for (s = 1; s <= 5; s++) { for (w = 1; w <= 5; w++) { for (r = 1; r <= 5; r++) { frmt = "|%" substr(just, j, 1) frmt = frmt substr(plus, p, 1) frmt = frmt substr(alt, a, 1) frmt = frmt substr(zero, z, 1) frmt = frmt fw[w] prec[r] frmt = frmt substr(spec, s, 1) "|" for (i = 1; i <= tot; i++) { result = sprintf(frmt, data[i]) # "normalize" if you must # sub(/\|\./, "|0.", result) printf("%-16s %-25s\t%g\n", frmt, result,data[i]) } } } } } } } } }