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Full Discussion: Best way to axe N bytes from the right?
Top Forums Programming Best way to axe N bytes from the right? Post 302912505 by Don Cragun on Friday 8th of August 2014 03:36:45 PM
Old 08-08-2014
Is this a homework assignment?

There are a lot of inconsistencies in the statements in your last post and you didn't answer most of my questions. Let me try once more:
  1. What is the function prototype for your function?
  2. What do you want your function to return (an integer or a string)? Your example said it should return "78" (which is a string), but you said you could use atoi() which returns an int???
  3. If you want your function to return one value, why are you passing it more than one string?
  4. What errors do you want to detect?
  5. How do you want to report errors? (Special return values, changing errno, diagnostics printed to stderr, ...)
  6. Have you read the man page for atoi()? If you have, why is the ".text" a concern?
 

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LEARN ABOUT NETBSD

axe

AXE(4)							   BSD Kernel Interfaces Manual 						    AXE(4)

NAME

     axe -- ASIX Electronics AX88172/AX88178/AX88772 10/100/Gigabit USB Ethernet device

SYNOPSIS

     axe*   at uhub?
     XXphy* at mii?

HARDWARE

     The axe driver supports the following adapters:

	   Apple USB Ethernet Adapter A1277
	   ATEN UC-210T
	   BAFO BF-320
	   Billionton Systems USB2AR
	   Buffalo(MELCO) LUA-U2-GT
	   Buffalo(MELCO) LUA-U2-KTX
	   Corega FEther USB2-TX
	   D-Link DUB-E100
	   Good Way GWUSB2E
	   Hawking UF200
	   Intellinet USB 2.0 to Ethernet (rev A)
	   IO-Data ETG-US2
	   JVC MP-PRX1
	   Konig CMP-NWUSB20
	   Level One USB-0200
	   Linksys USB200M
	   Linksys USB1000
	   Logitec LAN-GTJ/U2
	   Netgear FA120
	   Nintendo Wii USB Lan Ethernet Adapter RVL-015
	   OQO model 01+ Ethernet
	   Sitecom LN-029
	   SMC 2209USB/ETH
	   SnapPort USB 2.0 LAN Adapter
	   ST Lab USB 2.0 Fast Ethernet
	   Surecom EP-1427X-2
	   System TALKS SGC-X2UL
	   TRENDnet TU2-ET100
	   Z-TEK ZK-R01-2

DESCRIPTION

     The axe driver provides support for USB Ethernet adapters based on the ASIX Electronics AX88172, AX88178, and AX88772 USB 2.0 chipsets.

     The chip contains a 10/100 Ethernet MAC with MII interface and is designed to work with both Ethernet and HomePNA transceivers.  The AX8172
     and AX88772 contain 10/100 Ethernet MACs with MII interfaces.  The AX8178 contains a 10/100/1000 Gigabit Ethernet MAC with a GMII/MII inter-
     face.  The chip also supports USB 2.0, thereby accommodating 100 Mb/s data rates.

     The axe driver supports the following media types:

     autoselect 	   Enable automatic selection of the media type and options.

     10baseT/UTP	   Set 10Mbps operation.  The mediaopt option can also be used to enable full-duplex operation.  Not specifying full
			   duplex implies half-duplex mode.

     100baseTX		   Set 100Mbps (fast Ethernet) operation.  The mediaopt option can also be used to enable full-duplex operation.  Not
			   specifying full duplex implies half-duplex mode.

     1000baseT		   Set 1000Mbps (Gigabit Ethernet) operation (AX88178 only).

     The axe driver supports the following media options:

     full-duplex	   Force full duplex operation.  The interface will operate in half duplex mode if this media option is not specified.

     For more information on configuring this device, see ifconfig(8).

SEE ALSO

     arp(4), ifmedia(4), netintro(4), usb(4), ifconfig(8)

     ASIX AX88172 data sheet, http://www.asix.com.tw.

HISTORY

     The axe device driver first appeared in FreeBSD and was ported to NetBSD 3.0.  It replaces the NetBSD uax driver.

BSD
								   June 23, 2010							       BSD
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