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Double oblique hyphen in a Fraktur typeface. In Latin script, the double hyphen ⹀ is a punctuation mark that consists of two parallel hyphens (‐).It was a development of the earlier double oblique hyphen ⸗, which developed from a Central European variant of the virgule slash, originally a form of scratch comma.
SMALL HYPHEN-MINUS U+FE63: Pd, dash Common － FULLWIDTH HYPHEN-MINUS U+FF0D: Pd, dash Common ֊ ARMENIAN HYPHEN U+058A: Pd, dash Armenian ᐀ CANADIAN SYLLABICS HYPHEN U+1400: Pd, dash Canadian Aboriginal ־ HEBREW PUNCTUATION MAQAF U+05BE: Pd, dash Hebrew ᠆ MONGOLIAN TODO SOFT HYPHEN U+1806: Pd, dash Mongolian ອ YEZIDI HYPHENATION MARK U+ ...
Double-precision floating-point format (sometimes called FP64 or float64) is a floating-point number format, usually occupying 64 bits in computer memory; it represents a wide range of numeric values by using a floating radix point. Double precision may be chosen when the range or precision of single precision would be insufficient.
𝟗 𝟘 𝟙 𝟚 𝟛 𝟜 𝟝 𝟞 𝟟 U+1D7Ex 𝟠 𝟡 𝟢 𝟣 𝟤 𝟥 𝟦 𝟧 𝟨 𝟩 𝟪 𝟫 𝟬 𝟭 𝟮 𝟯 U+1D7Fx 𝟰 𝟱 𝟲 𝟳 𝟴 𝟵 𝟶 𝟷 𝟸 𝟹 𝟺 𝟻 𝟼 𝟽 𝟾 𝟿 Notes 1. ^ As of Unicode version 16.0 2. ^ Grey areas indicate non-assigned code points
This gives from 33 to 36 significant decimal digits precision. If a decimal string with at most 33 significant digits is converted to the IEEE 754 quadruple-precision format, giving a normal number, and then converted back to a decimal string with the same number of digits, the final result should match the original string.
to avoid double vowels, such as "semi-independent" when writing out fractions like "one-third" or "three-fifths" The hyphen is entered by the hyphen or minus key on all standard keyboards. In mathematical formula templates, a hyphen codes for a minus sign, but in plain text − produces the minus sign (see below).
FLT_MANT_DIG, DBL_MANT_DIG, LDBL_MANT_DIG – number of FLT_RADIX-base digits in the floating-point significand for types float, double, long double, respectively; FLT_MIN_EXP, DBL_MIN_EXP, LDBL_MIN_EXP – minimum negative integer such that FLT_RADIX raised to a power one less than that number is a normalized float, double, long double ...
2. Double factorial: if n is a positive integer, n!! is the product of all positive integers up to n with the same parity as n, and is read as "the double factorial of n". 3. Subfactorial: if n is a positive integer, !n is the number of derangements of a set of n elements, and is read as "the subfactorial of n". *