Modern Math NextAfter

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NextAfter

Returns the next representable number after x in the direction of y.

Syntax

NextAfter( x, y )

Notes

• One step of the type's own spacing, so NextAfter( 1.0, 2.0 ) - 1.0 is the double epsilon.
• Ulp gives the size of that step directly.
• Overloaded on float64 and on float32: a single-precision argument takes the single-precision path and does not widen.

Examples

#import "std/numeric"
using numeric

print NextAfter( 1.0, 2.0 ) - 1.0      '' 2.220446049250313e-016
print NextAfter( 1.0, 0.0 )            '' 0.9999999999999999
print NextAfter( 0.0, 1.0 )            '' 4.940656458412465e-324 -- the smallest double

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Library: Math Library
Category: Math Library
Documented under: The libm surface