mirror of
https://github.com/c-sooyoung/fold_slice.git
synced 2026-09-18 01:39:11 +09:00
60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
#ifndef PRECISION_H
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#define PRECISION_H
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/*!
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* \file
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* Precision handling support
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*
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* \pre needs standard exceptions and string
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*/
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/*!
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* \brief Precision related functions and types
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*/
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namespace precision {
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/*!
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* \brief Single or double precision
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*/
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enum type : unsigned char {
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Single, //!< single precision
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Double //!< double precision
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};
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/*!
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* \brief Precision from string
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* \arg str precision string
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* \return precision
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*/
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inline type from_str(const std::string &str)
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{
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type prec = Single;
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if (str == "double")
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prec = Double;
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else if (str != "single")
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throw std::invalid_argument("undefined precision string, must be 'single' or 'double'");
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return prec;
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}
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/*!
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* \brief Precision to string
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* \arg prec precision
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* \return string
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*/
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inline const char* to_str(type prec)
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{
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switch (prec) {
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case Single:
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return "single";
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case Double:
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return "double";
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default:
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throw std::invalid_argument("undefined precision value");
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}
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return "undef";
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}
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} // namespace precision
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#endif
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