main.go

package main

import (
	"fmt"
	"math"
	"os"
)

func main() {
	var vf = []float64{
		4.9790119248836735e+00,
		7.7388724745781045e+00,
		-2.7688005719200159e-01,
		-5.0106036182710749e+00,
		9.6362937071984173e+00,
		2.9263772392439646e+00,
		5.2290834314593066e+00,
		2.7279399104360102e+00,
		1.8253080916808550e+00,
		-8.6859247685756013e+00,
	}
	var ceil = []float64{
		5.0000000000000000e+00,
		8.0000000000000000e+00,
		0.0000000000000000e+00,
		-5.0000000000000000e+00,
		1.0000000000000000e+01,
		3.0000000000000000e+00,
		6.0000000000000000e+00,
		3.0000000000000000e+00,
		2.0000000000000000e+00,
		-8.0000000000000000e+00,
	}

	for i := 0; i < len(vf); i++ {
		println(math.Ceil(vf[i]), int(math.Ceil(vf[i])), int(vf[i]))
		if f := math.Ceil(vf[i]); ceil[i] != f {
			fmt.Sprintf("Ceil(%g) = %g, want %g", vf[i], f, ceil[i])
			os.Exit(1)
		}
	}
}

result:

+5.000000e+000
5
4

+8.000000e+000
8
7

-0.000000e+000
0
0

-5.000000e+000
-5
-5

+1.000000e+001
10
9

+3.000000e+000
3
2

+6.000000e+000
6
5

+3.000000e+000
3
2

+2.000000e+000
2
1

-8.000000e+000
-8
-8