X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsd-id128.xml;h=ac2000e275c53253645e45cb19f624437ee569ac;hb=1ddf879acf388a4625150c3a97b76458f6d2a070;hp=d45339043df247e7c1ff24984a9cd7955d19187f;hpb=a4023a43d0312568f0b81b39b4bc6fd9b64880eb;p=elogind.git
diff --git a/man/sd-id128.xml b/man/sd-id128.xml
index d45339043..ac2000e27 100644
--- a/man/sd-id128.xml
+++ b/man/sd-id128.xml
@@ -46,6 +46,7 @@
sd-id128
sd_id128_t
SD_ID128_MAKE
+ SD_ID128_CONST_STR
SD_ID128_FORMAT_STR
SD_ID128_FORMAT_VAL
sd_id128_equal
@@ -104,11 +105,21 @@
decode 128 bit IDs:
SD_ID128_MAKE() may be used
- to write a 128 bit ID in source code. A commonly used
- idiom is to give 128 bit IDs names using this macro:
+ to denote a constant 128 bit ID in source code. A
+ commonly used idiom is to assign a name to a 128 bit
+ ID using this macro:
#define SD_MESSAGE_COREDUMP SD_ID128_MAKE(fc,2e,22,bc,6e,e6,47,b6,b9,07,29,ab,34,a2,50,b1)
+ SD_ID128_CONST_STR() may be
+ used to convert constant 128bit IDs into constant
+ strings for output. The following example code will
+ output the string
+ "fc2e22bc6ee647b6b90729ab34a250b1":
+ int main(int argc, char *argv[]) {
+ puts(SD_ID128_CONST_STR(SD_MESSAGE_COREDUMP));
+}
+
SD_ID128_FORMAT_STR and
SD_ID128_FORMAT_VAL() may be used
to format a 128 bit ID in a