--- a/src/cx/utils.h	Fri Nov 01 18:33:16 2024 +0100
+++ b/src/cx/utils.h	Sat Nov 02 13:38:51 2024 +0100
@@ -45,56 +45,6 @@
 extern "C" {
 #endif
 
-// cx_szmul() definition
-
-#if (__GNUC__ >= 5 || defined(__clang__)) && !defined(CX_NO_SZMUL_BUILTIN)
-#define CX_SZMUL_BUILTIN
-
-/**
- * Alias for \c __builtin_mul_overflow.
- *
- * Performs a multiplication of size_t values and checks for overflow.
- *
- * @param a first operand
- * @param b second operand
- * @param result a pointer to a size_t, where the result should
- * be stored
- * @return zero, if no overflow occurred and the result is correct, non-zero
- * otherwise
- */
-#define cx_szmul(a, b, result) __builtin_mul_overflow(a, b, result)
-
-#else // no GNUC or clang bultin
-
-/**
- * Performs a multiplication of size_t values and checks for overflow.
-  *
- * @param a first operand
- * @param b second operand
- * @param result a pointer to a size_t, where the result should
- * be stored
- * @return zero, if no overflow occurred and the result is correct, non-zero
- * otherwise
- */
-#define cx_szmul(a, b, result) cx_szmul_impl(a, b, result)
-
-/**
- * Performs a multiplication of size_t values and checks for overflow.
- *
- * This is a custom implementation in case there is no compiler builtin
- * available.
- *
- * @param a first operand
- * @param b second operand
- * @param result a pointer to a size_t where the result should be stored
- * @return zero, if no overflow occurred and the result is correct, non-zero
- * otherwise
- */
-int cx_szmul_impl(size_t a, size_t b, size_t *result);
-
-#endif // cx_szmul
-
-
 /**
  * Reads data from a stream and writes it to another stream.
  *