diff -ru liquidwar-5.6.4/src/distor.c liquidwar-5.6.4b/src/distor.c
--- liquidwar-5.6.4/src/distor.c	2007-10-17 13:00:50.000000000 -0700
+++ liquidwar-5.6.4b/src/distor.c	2020-09-13 22:26:02.746272049 -0700
@@ -194,7 +194,7 @@
       cycle_tmp /= 2;
       speed--;
     }
-  cycle_tmp = fsqrt (fsqrt (cycle_tmp)) / 2;
+  cycle_tmp = sqrtf (sqrtf (cycle_tmp)) / 2;
   cycle_tmp /= SCREEN_W;
   cycle_tmp *= period;
   if (cycle_tmp <= 0)
@@ -203,8 +203,8 @@
     }
   cycle_coef = sens * 256 * (itofix (GLOBAL_TICKER % cycle_tmp) / cycle_tmp);
 
-  f0 = fsin (cycle_coef + freq_coef * period2);
-  fp0x0 = (PI_1024 * fcos (cycle_coef + freq_coef * period2)) / 1024;
+  f0 = sinf (cycle_coef + freq_coef * period2);
+  fp0x0 = (PI_1024 * cosf (cycle_coef + freq_coef * period2)) / 1024;
 
   alphax03 = (ampli_cst / 256) * ((fp0x0 - 2 * f0) / 256);
   betax02 = (ampli_cst / 256) * ((-fp0x0 + 3 * f0) / 256);
@@ -217,7 +217,7 @@
     }
   for (i = period2; i < real_length - period2; ++i)
     {
-      temp = ((ampli_cos) / 256) * (fcos (cycle_coef + freq_coef * i) / 256);
+      temp = ((ampli_cos) / 256) * (cosf (cycle_coef + freq_coef * i) / 256);
       buffer2[i] = temp / WAVE_SIZE_SCALE;
     }
 
diff -ru liquidwar-5.6.4/src/fighter.c liquidwar-5.6.4b/src/fighter.c
--- liquidwar-5.6.4/src/fighter.c	2007-10-17 13:00:50.000000000 -0700
+++ liquidwar-5.6.4b/src/fighter.c	2020-09-13 22:20:58.465616342 -0700
@@ -335,7 +335,7 @@
       coef += 256;
 
       attack[i] = (coef *
-		   fsqrt (fsqrt (1 << (LW_CONFIG_CURRENT_RULES.fighter_attack
+		   sqrtf (sqrtf (1 << (LW_CONFIG_CURRENT_RULES.fighter_attack
 				       + cpu_influence[i])))) / (256 * 8);
       if (attack[i] >= MAX_FIGHTER_HEALTH)
 	attack[i] = MAX_FIGHTER_HEALTH - 1;
@@ -343,7 +343,7 @@
 	attack[i] = 1;
 
       defense[i] = (coef *
-		    fsqrt (fsqrt
+		    sqrtf (sqrtf
 			   (1 <<
 			    (LW_CONFIG_CURRENT_RULES.fighter_defense +
 			     cpu_influence[i])))) / (256 * 256);
@@ -353,7 +353,7 @@
 	defense[i] = 1;
 
       new_health[i] = (coef *
-		       fsqrt (fsqrt
+		       sqrtf (sqrtf
 			      (1 <<
 			       (LW_CONFIG_CURRENT_RULES.fighter_new_health +
 				cpu_influence[i])))) / (256 * 4);
diff -ru liquidwar-5.6.4/src/palette.c liquidwar-5.6.4b/src/palette.c
--- liquidwar-5.6.4/src/palette.c	2007-10-17 13:00:50.000000000 -0700
+++ liquidwar-5.6.4b/src/palette.c	2020-09-13 22:20:58.465616342 -0700
@@ -88,7 +88,7 @@
 {
   int result;
 
-  result = fsqrt (i * 256) / 256;
+  result = sqrtf (i * 256) / 256;
   if (result > 255)
     result = 255;