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ferret/pkg/stdlib/math/floor.go
2018-10-14 13:06:27 -04:00

29 lines
690 B
Go

package math
import (
"context"
"math"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
)
// Floor returns the greatest integer value less than or equal to a given value.
// @param number (Int|Float) - Input number.
// @returns (Int) - The greatest integer value less than or equal to a given value.
func Floor(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.None, err
}
err = core.ValidateType(args[0], core.IntType, core.FloatType)
if err != nil {
return values.None, err
}
return values.NewInt(int(math.Floor(toFloat(args[0])))), nil
}