Float64

Base utilities for double-precision floating-point numbers.

Usage

var ns = require( '@stdlib/number/float64/base' );

ns

Base utilities for double-precision floating-point numbers.

var o = ns;
// returns {...}
  • assert: base double-precision floating-point number assert functions.
  • exponent( x ): return an integer corresponding to the unbiased exponent of a double-precision floating-point number.
  • fromBinaryString( bstr ): create a double-precision floating-point number from a literal bit representation.
  • fromInt64Bytes( bytes, stride, offset ): convert a signed 64-bit integer byte array to a double-precision floating-point number.
  • fromWords( high, low ): create a double-precision floating-point number from a higher order word and a lower order word.
  • getHighWord( x ): return an unsigned 32-bit integer corresponding to the more significant 32 bits of a double-precision floating-point number.
  • getLowWord( x ): return an unsigned 32-bit integer corresponding to the less significant 32 bits of a double-precision floating-point number.
  • normalize( x ): return a normal number y and exponent exp satisfying x = y * 2^exp.
  • setHighWord( x, high ): set the more significant 32 bits of a double-precision floating-point number.
  • setLowWord( x, low ): set the less significant 32 bits of a double-precision floating-point number.
  • signbit( x ): return a boolean indicating if the sign bit for a double-precision floating-point number is on (true) or off (false).
  • toBinaryString( x ): return a string giving the literal bit representation of a double-precision floating-point number.
  • float64ToFloat32( x ): convert a double-precision floating-point number to the nearest single-precision floating-point number.
  • float64ToInt32( x ): convert a double-precision floating-point number to a signed 32-bit integer.
  • float64ToInt64Bytes( x ): convert an integer-valued double-precision floating-point number to a signed 64-bit integer byte array according to host byte order (endianness).
  • float64ToUint32( x ): convert a double-precision floating-point number to an unsigned 32-bit integer.
  • toWords( x ): split a double-precision floating-point number into a higher order word and a lower order word.

Examples

var objectKeys = require( '@stdlib/utils/keys' );
var ns = require( '@stdlib/number/float64/base' );

console.log( objectKeys( ns ) );
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