インテル® Fortran コンパイラー 19.0 デベロッパー・ガイドおよびリファレンス
Elemental Intrinsic Function (Generic): Calculates the nearest whole number.
result = ANINT (a[,kind] )
a |
(Input) Must be of type real. |
kind |
(Input; optional) Must be a scalar integer constant expression. |
The result type is real. If kind is present, the kind parameter is that specified by kind; otherwise, the kind parameter is that of a. If a is greater than zero, ANINT ( a) has the value AINT (a + 0.5); if a is less than or equal to zero, ANINT (a) has the value AINT (a - 0.5).
Specific Name |
Argument Type |
Result Type |
|---|---|---|
ANINT 1 |
REAL(4) |
REAL(4) |
DNINT 1 |
REAL(8) |
REAL(8) |
QNINT |
REAL(16) |
REAL(16) |
1The setting of compiler options specifying real size can affect ANINT and DNINT. |
||
To truncate rather than round, use AINT.
ANINT (3.456) has the value 3.0.
ANINT (-2.798) has the value -3.0.
Consider the following:
REAL r1, r2
r1 = ANINT(2.6) ! returns the value 3.0
r2 = ANINT(-2.6) ! returns the value -3.0
! Calculates and adds tax to a purchase amount.
REAL amount, taxrate, tax, total
taxrate = 0.081
amount = 12.99
tax = ANINT (amount * taxrate * 100.0) / 100.0
total = amount + tax
WRITE (*, 100) amount, tax, total
100 FORMAT ( 1X, 'AMOUNT', F7.2 /
+ 1X, 'TAX ', F7.2 /
+ 1X, 'TOTAL ', F7.2)
END