インテル® Fortran コンパイラー XE 13.1 ユーザー・リファレンス・ガイド
Elemental Intrinsic Function (Generic): Returns the fractional part of the model representation of the argument value.
The result type and kind is the same as x. The result has the value x* b e. Parameters b and e are defined in Model for Real Data. If x has the value zero, the result has the value zero.