Version 0.1.1 - Added comparison function

PsychoCod3r · Oct 5, 2020 · 2055cac · 2055cac
1 parent ae29e5c
commit 2055cac
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Showing 2 changed files with 26 additions and 2 deletions.
diff --git a/dfloat.c b/dfloat.c
@@ -1,5 +1,5 @@
 /****************************************************
- * libdfloat, version 0.1 Alpha                     *
+ * libdfloat, version 0.1.1 Alpha                   *
  * Description: Implements floating point numbers   *
  *              with exact decimal representations  *
  * Current file: All libdfloat function definitions *
@@ -185,6 +185,26 @@ dfloatN_div( 16, 32 )
 dfloatN_div( 32, 64 )
 dfloatN_div( 64, 128 )
 
+// Returns 1 if Arg1 > Arg2, -1 if Arg1 < Arg2, 0 if Arg1 == Arg2
+#define dfloatN_cmp( small, big )\
+int dfloat ## big ## _cmp( dfloat ## big ## _t *df1, dfloat ## big ## _t *df2 ){\
+	dfloat ## big ## _t *cpy;\
+	int result;\
+	cpy = (dfloat ## big ## _t *) malloc( sizeof( dfloat ## big ## _t ) );\
+	dfloat ## big ## _cpy( cpy, df1 );\
+	dfloat ## big ## _sub( cpy, df2 );\
+	if( cpy->mantissa > 0 )\
+		return 1;\
+	if( cpy->mantissa < 0 )\
+		return -1;\
+	return 0;\
+}
+
+dfloatN_cmp( 8, 16 )
+dfloatN_cmp( 16, 32 )
+dfloatN_cmp( 32, 64 )
+dfloatN_cmp( 64, 128 )
+
 // Reads a dfloat value from a string
 #define dfloatN_atof( small, big )\
 dfloat ## big ## _t *dfloat ## big ## _atof( char *src ){\

diff --git a/dfloat.h b/dfloat.h
@@ -1,5 +1,5 @@
 /****************************************************
- * libdfloat, version 0.1 Alpha                     *
+ * libdfloat, version 0.1.1 Alpha                   *
  * Description: Implements floating point numbers   *
  *              with exact decimal representations  *
  * Current file: Header file for entire project     *
@@ -38,6 +38,7 @@ void dfloat16_add( dfloat16_t *, dfloat16_t * );
 void dfloat16_sub( dfloat16_t *, dfloat16_t * );
 void dfloat16_mul( dfloat16_t *, dfloat16_t * );
 void dfloat16_div( dfloat16_t *, dfloat16_t *, int );
+int dfloat16_cmp( dfloat16_t *, dfloat16_t * );
 void dfloat16_cpy( dfloat16_t *, dfloat16_t * );
 dfloat32_t *dfloat16_cast32( dfloat16_t * );
 dfloat64_t *dfloat16_cast64( dfloat16_t * );
@@ -48,6 +49,7 @@ void dfloat32_add( dfloat32_t *, dfloat32_t * );
 void dfloat32_sub( dfloat32_t *, dfloat32_t * );
 void dfloat32_mul( dfloat32_t *, dfloat32_t * );
 void dfloat32_div( dfloat32_t *, dfloat32_t *, int );
+int dfloat32_cmp( dfloat32_t *, dfloat32_t * );
 void dfloat32_cpy( dfloat32_t *, dfloat32_t * );
 dfloat16_t *dfloat32_cast16( dfloat32_t * );
 dfloat64_t *dfloat32_cast64( dfloat32_t * );
@@ -58,6 +60,7 @@ void dfloat64_add( dfloat64_t *, dfloat64_t * );
 void dfloat64_sub( dfloat64_t *, dfloat64_t * );
 void dfloat64_mul( dfloat64_t *, dfloat64_t * );
 void dfloat64_div( dfloat64_t *, dfloat64_t *, int );
+int dfloat64_cmp( dfloat64_t *, dfloat64_t * );
 void dfloat64_cpy( dfloat64_t *, dfloat64_t * );
 dfloat16_t *dfloat64_cast16( dfloat64_t * );
 dfloat32_t *dfloat64_cast32( dfloat64_t * );
@@ -68,6 +71,7 @@ void dfloat128_add( dfloat128_t *, dfloat128_t * );
 void dfloat128_sub( dfloat128_t *, dfloat128_t * );
 void dfloat128_mul( dfloat128_t *, dfloat128_t * );
 void dfloat128_div( dfloat128_t *, dfloat128_t *, int );
+int dfloat128_cmp( dfloat128_t *, dfloat128_t * );
 void dfloat128_cpy( dfloat128_t *, dfloat128_t * );
 dfloat16_t *dfloat128_cast16( dfloat128_t * );
 dfloat32_t *dfloat128_cast32( dfloat128_t * );