Allow printing prefixes for %x,%X,%b and %o (pass ~base to udec)

src/tests.asm

@@ -99,6 +99,8 @@ section .rodata
 	printf12Str		db	"\nRAX\t%064b\nEAX\t\t\t\t\t%032b\n AX\t\t\t\t\t\t\t%016b\n AH\t\t\t\t\t\t\t%08b\t\n AL\t\t\t\t\t\t\t\t%08b\n",EOS
 	printf13		db	TAB,"printf(",DQUO,"%o | %8o | %08o\n",DQUO,", 1500, 1500, 1500): ",NL,TAB,TAB,EOS
 	printf13Str		db	"%o | %8o | %08o\n",EOS
+	printf14		db	TAB,"printf(",DQUO,"%#b | %#08b | %#x | %#8X\n | %#o",DQUO,", 8, 8, 0xABCDEF, 0x12345678, 15): ",NL,TAB,TAB,EOS
+	printf14Str		db	"%#b | %#08b | %#x | %#8X | %#o\n",EOS
 
 	; strlen()
 	msgStrlen		db	NL,"TEST strlen()",NL,EOS
@@ -383,6 +385,17 @@ _start:
 	mov	rdx, 1500
 	mov	rcx, 1500
 	call	printf
+
+	; TEST 14
+	lea	rdi, [rel printf14]
+	call	print
+	lea	rdi, [rel printf14Str]
+	mov	rsi, 8
+	mov	rdx, 8
+	mov	rcx, 0xABCDEF
+	mov	r8, 0x12345678
+	mov	r9, 15
+	call	printf
 %endif
 
 ;---