* add support for a long -> string conversion (useful in RTE stuff)

This commit was SVN r1718.

src/util/Makefile.am

@@ -17,6 +17,7 @@ headers = \
     few.h \
     if.h \
     malloc.h \
+    numtostr.h \
     output.h \
     path.h \
     sys_info.h \
@@ -34,6 +35,7 @@ libutil_la_SOURCES = \
     few.c \
     if.c \
     malloc.c \
+    numtostr.c \
     output.c \
     path.c \
     proc_info.c \

src/util/numtostr.c

@@ -0,0 +1,50 @@
+/*
+ * $HEADER$
+ */
+
+#include "ompi_config.h"
+#include "util/numtostr.h"
+
+#include <stdio.h>
+
+
+char*
+ltostr(long num)
+{
+    /* waste a little bit of space, but always have a big enough buffer */
+    int buflen = sizeof(long) * 8;
+    char *buf = NULL;
+    int ret = 0;
+
+    buf = malloc(sizeof(char) * buflen);
+    if (NULL == buf) return NULL;
+    
+    ret = snprintf(buf, buflen, "%ld", num);
+    if (ret < 0) {
+        free(buf);
+        return NULL;
+    }
+    
+    return buf;
+}
+
+
+char*
+dtostr(double num)
+{
+    /* waste a little bit of space, but always have a big enough buffer */
+    int buflen = sizeof(long) * 8;
+    char *buf = NULL;
+    int ret = 0;
+    
+    buf = malloc(sizeof(char) * buflen);
+    if (NULL == buf) return NULL;
+    
+    ret = snprintf(buf, buflen, "%f", num);
+    if (ret < 0) {
+        free(buf);
+        return NULL;
+    }
+    
+    return buf;
+}

src/util/numtostr.h

@@ -0,0 +1,27 @@
+/*
+ * $HEADER$
+ */
+
+#ifndef OMPI_NUMTOSTR_UTIL
+#define OMPI_NUMTOSTR_UTIL
+
+/**
+ * Convert a long integer to a char* string.  The returned buffer is
+ * allocated by calling malloc() and must be freed by the caller.
+ *  
+ *  @param num (IN)      Input number
+ *  @return              String containing number (NULL on failure)
+ */
+char* ltostr(long num);
+
+
+/**
+ * Convert a double to a char* string.  The returned buffer is allocated
+ * by calling malloc() and must be freed by the caller.
+ *
+ * @param num (IN)       Input number
+ * @return               String containing number (NULL on failure)
+ */
+char* dtostr(double num);
+
+#endif /* OMPI_NUMTOSTR_UTIL */

test/util/Makefile.am

@@ -7,11 +7,26 @@ include $(top_srcdir)/config/Makefile.options
 AM_CPPFLAGS = -I$(top_srcdir)/test/support -DOMPI_ENABLE_DEBUG_OVERRIDE=1
 
 noinst_PROGRAMS = \
+	ompi_numtostr \
 	ompi_os_path \
 	ompi_sys_info \
 	ompi_os_create_dirpath \
 	ompi_argv 
 
+ompi_numtostr_SOURCES = ompi_numtostr.c
+ompi_numtostr_LDADD = \
+        $(top_builddir)/src/class/ompi_object.lo \
+        $(top_builddir)/src/util/malloc.lo \
+        $(top_builddir)/src/util/output.lo \
+        $(top_builddir)/src/util/argv.lo \
+        $(top_builddir)/src/util/strncpy.lo \
+        $(top_builddir)/src/threads/mutex.lo \
+        $(top_builddir)/src/threads/mutex_pthread.lo \
+        $(top_builddir)/src/threads/mutex_spinlock.lo \
+        $(top_builddir)/src/threads/mutex_spinwait.lo \
+        $(top_builddir)/src/util/numtostr.lo 
+ompi_numtostr_DEPENDENCIES = $(ompi_numtostr_LDADD)
+
 ompi_argv_SOURCES = ompi_argv.c
 ompi_argv_LDADD = \
         $(top_builddir)/src/class/ompi_object.lo \

test/util/ompi_numtostr.c

@@ -0,0 +1,31 @@
+#include "ompi_config.h"
+#include "util/numtostr.h"
+
+#include <string.h>
+#include <stdio.h>
+
+int
+main(int argc, char *argv[])
+{
+    char * tst;
+    char * expected;
+    
+    tst = ltostr(10);
+    expected = malloc(sizeof(long) * 8);
+    snprintf(expected, sizeof(long) * 8, "%d", 10);
+    if (strcmp(tst, expected) != 0) {
+        exit(1);
+    }
+    
+    free(tst);
+    free(expected);
+    
+    tst = dtostr(5.32);
+    expected = malloc(sizeof(long) * 8);
+    snprintf(expected, sizeof(long) * 8, "%f", 5.32);
+    if (strcmp(tst, expected) != 0) {
+        exit(1);
+    }
+        
+    return 0;
+}