Double summit

A double summit, double peak, twin summit or twin peak refers to a mountain or hill that has two summits, separated by a col or saddle.

One well known double summit is Austria’s highest mountain, the Großglockner, where the main summit of the Großglockner is separated from that of the Kleinglockner by the Glocknerscharte col in the area of a geological fault. Other double summits have resulted from geological folding. For example, on Mont Withrow in British Columbia resistant sandstones form the limbs of the double summit, whilst the softer rock in the core of the fold was eroded.

Triple peaks occur more rarely - one example is the Rosengartenspitze in the Dolomites. The Illimani in Bolivia is an example of a quadruple summit.

Well known double summits (selection)

Well known double summits are (roughly from east to west):

Europe

Limestone Alps

C data types

In the C programming language, data types are declarations for memory locations or variables that determine the characteristics of the data that may be stored and the methods (operations) of processing that are permitted involving them.

The C language provides basic arithmetic types, such as integer and real number types, and syntax to build array and compound types. Several header files in the C standard library contain definitions of support types, that have additional properties, such as providing storage with an exact size, independent of the implementation.

Basic types

The C language provides the four basic arithmetic type specifiers char, int, float and double, and the modifiers signed, unsigned, short and long. The following table lists the permissible combinations to specify a large set of storage size-specific declarations.

The actual size of integer types varies by implementation. The standard only requires size relations between the data types and minimum sizes for each data type:

Double-precision floating-point format

Double-precision floating-point format is a computer number format that occupies 8 bytes (64 bits) in computer memory and represents a wide, dynamic range of values by using a floating point.

Double-precision floating-point format usually refers to binary64, as specified by the IEEE 754 standard, not to the 64-bit decimal format decimal64.

IEEE 754 double-precision binary floating-point format: binary64

Double-precision binary floating-point is a commonly used format on PCs, due to its wider range over single-precision floating point, in spite of its performance and bandwidth cost. As with single-precision floating-point format, it lacks precision on integer numbers when compared with an integer format of the same size. It is commonly known simply as double. The IEEE 754 standard specifies a binary64 as having:

This gives 15–17 significant decimal digits precision. If a decimal string with at most 15 significant digits is converted to IEEE 754 double precision representation and then converted back to a string with the same number of significant digits, then the final string should match the original. If an IEEE 754 double precision is converted to a decimal string with at least 17 significant digits and then converted back to double, then the final number must match the original.

Double (volleyball)

A double occurs in volleyball when a player, during a match, is credited with scoring at least ten times in one (or more) of five statistical categories: Aces, Kills, Blocks, Digs, and Assists. The term was apparently derived from similar basketball jargon; the expression "triple-double" was coined by former Los Angeles Lakers public relations director Bruce Jolesch in order to showcase Magic Johnson's versatility.

There are four main types of doubles:

Of the five statistical categories, double digit match totals are most common for assists, but rare for any positions other than setter. The next most frequent double-digit category is digs, which is most often attained by liberos or defensive specialists, but can be achieved by any strong defensive player. Kills are the third most common double-digit achievement category, occurring predominantly among hitters, especially outside hitters and middle blockers. Likewise, double-digit blocking numbers are preponderantly accomplished by middle blockers or outside hitters, but are much less common than double-digit kills. Rarest by far are double-digit aces, which even the most exceptional server is unlikely to attain once in a career.

Summit (Catonsville, Maryland)

Summit is a historic home located at Catonsville, Baltimore County, Maryland. It a large brick house, once part of a country estate owned by James Albert Gary. It features a three-story Italianate tower and large wing extending to the rear. The main façade is three stories and five bays wide, with the tower located on the east side. A one-story porch with square columns and railings runs across the full façade. The mansion was built originally as a summer home and later converted to apartments after its sale to the Summit Park Company in 1919.

It was listed on the National Register of Historic Places in 1979.

References

External links

Summit (supercomputer)

Summit is a supercomputer being developed by IBM for use at Oak Ridge National Laboratory. The computer will be finished in 2017, and moved to Oak Ridge in 2018.

See also

References

Summit (disambiguation)

A summit is the highest point of a mountain, hill, road, or railway. The term may also refer to:

Places