nearfloat

get previous or next floating-point number

Calling Sequence

xnear = nearfloat(dir, x)

Arguments

:dir string (“succ” or “pred”) : :x real scalar, vector or matrix : :xnear real scalar, vector or matrix :

Description

This function computes, in the element wise meaning, the corresponding neighbours of the elements of x (in the underlying floating point set, see number_properties), the successors if dir = “succ” and the predecessors if dir = “pred”.

Examples

`format`_("e",22)
nearfloat("succ",1) - 1
1 - nearfloat("pred",1)
`format`_("v") //reset default format

See Also

• number_properties determine floating-point parameters
• frexp dissect floating-point numbers into base 2 exponent and mantissa