chore: add f64 to f32 conversions

Signed-off-by: Nakul Krishnakumar <nakulkrishnakumar86@gmail.com>

Author: nakul-krishnakumar

lib/node_modules/@stdlib/math/base/special/acoshf/lib/main.js

@@ -95,6 +95,8 @@ var HUGE = 1 << 28; // 2**28
 */
 function acoshf( x ) {
 	var t;
+	var s;
+	x = f32( x );
 	if ( isnanf( x ) || x < 1.0 ) {
 		return NaN;
 	}
@@ -105,11 +107,13 @@ function acoshf( x ) {
 		return f32( lnf( x ) + FLOAT32_LN2 );
 	}
 	if ( x > 2.0 ) {
-		return lnf( f32( 2.0*x ) - f32( 1.0 / f32( x + sqrtf( f32( x*x ) - 1.0 ) ) ) );
+		t = f32( x*x );
+		s = f32( t - 1.0 );
+		return lnf( f32( f32( 2.0*x ) - f32( 1.0 / f32( x + sqrtf( s ) ) ) ) );
 	}
 	// Case: 2 >= x > 1
 	t = f32( x - 1.0 );
-	return log1pf( t + sqrtf( f32( 2.0*t ) + f32( t*t ) ) );
+	return log1pf( f32( t + sqrtf( f32( f32( 2.0*t ) + f32( t*t ) ) ) ) );
 }