It is a separate function rather than a part of count_digits to workaround the lack of static constexpr in constexpr functions.

Returns the file name where this test is defined.

A wrapper around fwrite that throws on error.

Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking.

expr ::= seq ( '|' seq )* ;

long ::= '--' chars [ ( ' ' | '=' ) chars ] ;

seq ::= ( atom [ '...' ] )* ;

shorts ::= '-' ( chars )* [ [ ' ' ] chars ] ;

Remove trailing zeros from n and return the number of zeros removed (float).

Sets the cardinality of this expectation spec.

STL-style container methods.

Gets the number of successful tests.

If c is a hex digit returns its numeric value, otherwise -1.

Tries increasing the buffer capacity to `new_capacity`. It can increase the capacity by a smaller amount than requested but guarantees there is space

Computes upper 128 bits of multiplication of a 64-bit unsigned integer and a 128-bit unsigned integer.