Update documentation, increase max filename length

I've updating the documentation to better reflect the fact that memory
use can now be limited. I've also increased the maximum filename length
to 160 characters.

CHANGES.md

@@ -20,4 +20,10 @@
  - Added the ability to limit memory use. The memory limit is specified at
    runtime in megabytes as the first parameter to the benchmark executable. The
    output directory name is now specified by the second parameter.
- - Fixed a typo in the out-of-memory error message.
+ - Fixed a typo in the out-of-memory error message.
+
+## 0.3.1 (December 28, 2014)
+
+ - Updated documentation to reflect the memory limiting feature.
+ - Increased the maximum file name length to 200 characters.
+ - Minor stylistic changes in code.

README.md

@@ -35,7 +35,9 @@ disk paging to complete the computation, resulting in a dramatic slowdown and an
 attendant drop in QUIPS. Specifically, the benchmark stops when the QUIPS for
 the previous trial drops belows a predefined ratio of the peak QUIPS attained
 during the benchmark or when the shortest lap in a trial takes longer than a
-predefined amount of time. (More details on how to set these limits follow.)
+predefined amount of time. Alternatively, the maximum amount of memory to use
+can be set and the benchmark will stop when this limit is reached. (More details
+on how to set these limits follow.)
 
 ## Building and configuration
 
@@ -75,7 +77,8 @@ An example build command would look like this:
 A Makefile is included to simplify compilation of the benchmark. Running `make`
 or `mingw32-make` will generate binaries which use `DSIZE` of 16-, 32-, and
 64-bit integers as well as single-, double-, and extended-precision
-floating-point numbers.
+floating-point numbers. The Makefile currently assumes GCC; modify it as needed
+if you are using a different compiler.
 
 The macros in the "Adjustable Defines" section of `hi64.h` determine the
 behavior of the benchmark, such as when to stop the benchmark and how many laps
@@ -150,7 +153,8 @@ directory does not exist, the benchmark will not run. (This unusual output
 behavior was inherited from the original HINT code and will be changed in a
 future release to make the program easier to use.)
 
-The program runs until the `STOPRT` or `STOPTM` thresholds are reached. This
+The program runs until the `STOPRT` or `STOPTM` thresholds are reached, or until
+the specified memory limit is reached. If no memory limit is specified, this
 generally means that the system will run out of memory and start swapping to
 disk heavily before the benchmark is finished.
 

hi64.c

@@ -27,7 +27,7 @@
 int main(int argc, char *argv[])
 {
     FILE    *curv;        /* Output file for QUIPS curve                      */
-    char    filnm[80];    /* Output file name                                 */
+    char    filnm[200];   /* Output file name                                 */
 
     Speed   qdata[NSAMP]; /* Array to keep track of QUIPs and time            */
 
@@ -63,7 +63,7 @@ int main(int argc, char *argv[])
             t0,           /* Starting time                                    */
             t1,           /* Ending time                                      */
             tdelta,       /* Timer resolution                                 */
-            /* tlast, */  /* Time of last recorded trial                      */
+         /* tlast, */     /* Time of last recorded trial                      */
             tscout;       /* Time for initial survey                          */
 
     int64_t dbits,        /* Number of bits of accuracy for dmax              */
@@ -77,7 +77,7 @@ int main(int argc, char *argv[])
 
     char*   suffix;       /* Suffix for data.suffix directory                 */
 
-    printf("\nHI64 System Benchmark, Version 0.3.0");
+    printf("\nHI64 System Benchmark, Version 0.3.1");
     printf(" (December 28, 2014)\n");
     printf("Derived from HINT originally developed by");
     printf(" John L. Gustafson & Quinn O. Snell,\n");

hi64.h

@@ -125,7 +125,8 @@
                            /* run out of decent-speed memory well before this */
 #endif
 
-#define MXPROC     32      /* Maximum number of processors to use in shared   */                           /* memory configuration. Adjust as necessary.      */
+#define MXPROC     32      /* Maximum number of processors to use in shared   */
+                           /* memory configuration. Adjust as necessary.      */
 
 /******************************************************************************/
 /*      Non-Adjustable Defines                                                */