refactor: refactor main.c to make use of sincos

Author: aayush0325

lib/node_modules/@stdlib/math/base/special/cexp/src/main.c

@@ -18,8 +18,7 @@
 
 #include "stdlib/math/base/special/cexp.h"
 #include "stdlib/math/base/special/exp.h"
-#include "stdlib/math/base/special/sin.h"
-#include "stdlib/math/base/special/cos.h"
+#include "stdlib/math/base/special/sincos.h"
 #include "stdlib/math/base/assert/is_nan.h"
 #include "stdlib/math/base/assert/is_infinite.h"
 #include "stdlib/constants/float64/pinf.h"
@@ -74,8 +73,9 @@ stdlib_complex128_t stdlib_base_cexp( const stdlib_complex128_t z ) {
 		if ( im == 0.0 ) {
 			re = e;
 		} else {
-			re = stdlib_base_cos( im ) * e;
-			im = stdlib_base_sin( im ) * e;
+			stdlib_base_sincos( im, &re, &im );
+			re *= e;
+			im *= e;
 		}
 	}
 	return stdlib_complex128( re, im );