Add ldiv() and lldiv() too

ChangeLog

@@ -10820,4 +10820,8 @@
 	  From Macs Neklyudov (2015-08-13).
 	* fs/vfs/fs_poll.c:  If we fail to setup the poll for any file
 	  descriptor, for any reason, set the POLLERR bit (2015-08-13).
-
+	* libc/stdlib: Add support for div() to the C library.  From
+	  OrbitalFox (2015-08-14).
+	* libc/stdlib:  Might as well add ldiv() and lldiv() to since
+	  these are equivalent to div() with long and long long types,
+	  respectively, instead of int (2015-08-14).

include/stdlib.h

@@ -105,6 +105,26 @@ struct div_s
 
 typedef struct div_s div_t;
 
+/* Structure type returned by the ldiv() function. */
+
+struct ldiv_s
+{
+  long quot;    /* Quotient */
+  long rem;     /* Remainder */
+};
+
+typedef struct ldiv_s ldiv_t;
+
+/* Structure type returned by the lldiv() function. */
+
+struct lldiv_s
+{
+  long quot;    /* Quotient */
+  long rem;     /* Remainder */
+};
+
+typedef struct lldiv_s lldiv_t;
+
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/
@@ -185,6 +205,10 @@ FAR void *calloc(size_t, size_t);
 int      abs(int j);
 #ifdef CONFIG_CAN_PASS_STRUCTS
 div_t    div(int numer, int denom);
+ldiv_t   ldiv(long numer, long denom);
+#ifdef CONFIG_HAVE_LONG_LONG
+lldiv_t  lldiv(long long numer, long long denom);
+#endif
 #endif
 long int labs(long int j);
 #ifdef CONFIG_HAVE_LONG_LONG

libc/stdlib/Make.defs

@@ -35,8 +35,9 @@
 
 # Add the stdlib C files to the build
 
-CSRCS += lib_abs.c lib_abort.c lib_div.c lib_imaxabs.c lib_itoa.c lib_labs.c
+CSRCS += lib_abs.c lib_abort.c lib_div.c lib_ldiv.c lib_lldiv.c
-CSRCS += lib_llabs.c lib_rand.c lib_qsort.c
+CSRCS += lib_imaxabs.c lib_itoa.c lib_labs.c lib_llabs.c
+CSRCS += lib_rand.c lib_qsort.c
 CSRCS += lib_strtol.c lib_strtoll.c lib_strtoul.c lib_strtoull.c
 CSRCS += lib_strtod.c lib_checkbase.c