A.2.26.1 Values
r must be one of the following values.
Table A–12 The -fround Values|
Value |
Meaning |
|---|---|
|
nearest |
Rounds towards the nearest number and breaks ties to even numbers. |
|
tozero |
Rounds to zero. |
|
negative |
Rounds to negative infinity. |
|
positive |
Rounds to positive infinity. |
Defaults
When the –fround option is not specified, the rounding mode defaults to -fround=nearest.
Warnings
If you compile one routine with –fround=r, compile all routines of the program with the same –fround=r option; otherwise, you might get unexpected results.
This option is effective only if used when compiling the main program.
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