Create a metric format spec having the specified scale and format. The scale indicates the multiplier that may be used when formatting values, and format must be a printf-style format string for formatting a single floating-point value. The behavior is undefined unless format is null-terminated, contains a printf-style format string valid for a single floating-point value, and remains valid and unmodified for the lifetime of this object.
Declared in <balm_metricformat.h>
MetricFormatSpec(
float scale,
char const* format);