%.4x:	`0012'
%04x:	`0012'
%4.4x:	`0012'
%04.4x:	`0012'
%4.3x:	` 012'
%04.3x:	` 012'
%.*x:	`0012'
%0*x:	`0012'
%*.*x:	`0012'
%0*.*x:	`0012'
bad format:	"%J"
nil pointer (padded):	"(nil)"
decimal negative:	"-2345"
octal negative:	"37777773327"
hex negative:	"fffff6d7"
long decimal number:	"-123456"
zero-padded LDN:	"-000123456"
space-padded LDN:	"   -123456"
left-adjusted SLDN:	"-123456   "
zero-padded string:	"    Hi, Z."
left-adjusted Z string:	"Hi, Z.    "
space-padded string:	"    Hi, Z."
left-adjusted S string:	"Hi, Z.    "
null string:	"(null)"
limited string:	"Good morning, Doctor C"
e-style >= 1:	"1.234000e+01"
e-style >= .1:	"1.234000e-01"
e-style < .1:	"1.234000e-03"
e-style big:	"1.000000000000000000000000000000000000000000000000000000000000e+20"
e-style == .1:	"1.000000e-01"
f-style >= 1:	"12.340000"
f-style >= .1:	"0.123400"
f-style < .1:	"0.001234"
g-style >= 1:	"12.34"
g-style >= .1:	"0.1234"
g-style < .1:	"0.001234"
g-style big:	"100000000000000000000"
 0.10000
 0.10000
x0.5000x
0x1
something really insane: 1.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
5.87747175411143754e-39
   4.94066e-324
|       0.0000 |   0.0000e+00 |            0 |
|       1.0000 |   1.0000e+00 |            1 |
|      -1.0000 |  -1.0000e+00 |           -1 |
|     100.0000 |   1.0000e+02 |          100 |
|    1000.0000 |   1.0000e+03 |         1000 |
|   10000.0000 |   1.0000e+04 |        1e+04 |
|   12345.0000 |   1.2345e+04 |    1.234e+04 |
|  100000.0000 |   1.0000e+05 |        1e+05 |
|  123456.0000 |   1.2346e+05 |    1.235e+05 |
snprintf ("%30s", "foo") == 30, "                           foo"
snprintf ("%.999u", 10) = 999

Formatted output test
prefix  6d      6o      6x      6X      6u
%-+#0 |-123   |0377   |0xff   |0XFF   |4294967295 |
 %-+# |-123   |0377   |0xff   |0XFF   |4294967295 |
 %-+0 |-123   |377    |ff     |FF     |4294967295 |
  %-+ |-123   |377    |ff     |FF     |4294967295 |
 %-#0 |-123   |0377   |0xff   |0XFF   |4294967295 |
  %-# |-123   |0377   |0xff   |0XFF   |4294967295 |
  %-0 |-123   |377    |ff     |FF     |4294967295 |
   %- |-123   |377    |ff     |FF     |4294967295 |
 %+#0 |-00123 |000377 |0x00ff |0X00FF |4294967295 |
  %+# |  -123 |  0377 |  0xff |  0XFF |4294967295 |
  %+0 |-00123 |000377 |0000ff |0000FF |4294967295 |
   %+ |  -123 |   377 |    ff |    FF |4294967295 |
  %#0 |-00123 |000377 |0x00ff |0X00FF |4294967295 |
   %# |  -123 |  0377 |  0xff |  0XFF |4294967295 |
   %0 |-00123 |000377 |0000ff |0000FF |4294967295 |
    % |  -123 |   377 |    ff |    FF |4294967295 |
(null)
(null)
1234567.800000 should be 1234567.800000
123.456 should be 123.456
10 should be 10
0.02 should be 0.02
0.10000000000000009
Test ok.
sprintf (buf, "%07llo", 040000000000ll) = 40000000000
printf ("%c", 257) = 

printf ("%hu", 65537) = 1
--- Should be no further output. ---