diff --git a/README.md b/README.md
index 2d3809e..da1ea05 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 # C-JS-bytebeat-render
 
+> **Warning**  
+> You're on the branch, where the program uses only type `float` for floating point values.
+
 Dual-licensed under the [Unlicense](http://unlicense.org) (`LICENSE`) or Creative Commons Zero 1.0 Universal (`COPYING`).
 
 **Description:** a bytebeat rendering engine in C (no support of JavaScript bytebeat yet)
diff --git a/src/template.c b/src/template.c
index 39356bd..35c5e0e 100644
--- a/src/template.c
+++ b/src/template.c
@@ -78,27 +78,27 @@
 
 // function prototypes
 #if FP_RETURN_TYPE
-long double
+float
 #else
 SAMPLE_TYPE
 #endif
-bytebeat(long double time);
+bytebeat(float time);
 
 // function implementations
 #if FP_RETURN_TYPE
-long double
+float
 #else
 SAMPLE_TYPE
 #endif
-bytebeat(long double time)
+bytebeat(float time)
 {
 #if PRECALCULATED_RATIO
 	`final_sample_rate_code`
 #elif ORIGINAL_SAMPLE_RATE != SAMPLE_RATE
 # if SAMPLE_RATE > ORIGINAL_SAMPLE_RATE
-	time /= ((long double) SAMPLE_RATE) / ((long double) ORIGINAL_SAMPLE_RATE);
+	time /= ((float) SAMPLE_RATE) / ((float) ORIGINAL_SAMPLE_RATE);
 # else
-	time *= ((long double) ORIGINAL_SAMPLE_RATE / ((long double) SAMPLE_RATE));
+	time *= ((float) ORIGINAL_SAMPLE_RATE / ((float) SAMPLE_RATE));
 # endif
 #endif
 	uintmax_t t = (uintmax_t) time;
@@ -248,7 +248,7 @@ main(void)
 #endif
 #if BIT_DEPTH < 8
 		,
-		bit_depth_stretch = ((long double) BIT_DEPTH) / 8.L
+		bit_depth_stretch = ((float) BIT_DEPTH) / 8.L
 #endif
 		;
 
@@ -267,14 +267,14 @@ main(void)
 #endif
 			// 1. generate audio data
 #if FP_RETURN_TYPE
-			long double bytebeat_res =
-				floor(bytebeat(floor((long double) time)));
+			float bytebeat_res =
+				floorf(bytebeat(floorf((float) time)));
 #elif IS_SIGNED
 			intmax_t bytebeat_res =
-				(intmax_t) bytebeat(floor((long double) time));
+				(intmax_t) bytebeat(floorf((float) time));
 #else
 			uintmax_t bytebeat_res =
-				(uintmax_t) bytebeat(floor((long double) time));
+				(uintmax_t) bytebeat(floorf((float) time));
 #endif
 
 			// 2. if signed, then wrap up to unsigned
@@ -293,7 +293,7 @@ main(void)
 			// 4. if bit depth is less than 8, stretch it
 #if BIT_DEPTH < 8
 			sample_res = (SAMPLE_TYPE)
-				((long double) sample_res * bit_depth_stretch);
+				((float) sample_res * bit_depth_stretch);
 #endif
 
 			// 5. save sample into buffer
@@ -315,7 +315,7 @@ main(void)
 				  ,
 				  _ANSI_CLEAR_STRING,
 				  gen_length_minus_1 - time,
-				  ((long double) time * 100) / (long double) GEN_LENGTH
+				  ((float) time * 100) / (float) GEN_LENGTH
 #if SEQUENTIAL_MODE
 				  , (uintmax_t) seq + 1, (uintmax_t) MAX
 #endif