}

    /**
     * Configures the task to sign each of the given files
     */
    public void sign(File... files) {
        addSignatures(null, files);
    }

    /**
     * Configures the task to sign each of the given artifacts, using the given classifier as the classifier for the resultant signature publish artifact.
     */
    public void sign(String classifier, File... files) {

// The character case is ignored.
func special(s string) (f float64, n int, ok bool) {
	if len(s) == 0 {
		return 0, 0, false
	}
	sign := 1
	nsign := 0
	switch s[0] {
	case '+', '-':
		if s[0] == '-' {
			sign = -1
		}
		nsign = 1
		s = s[1:]
		fallthrough
	case 'i', 'I':
		n := commonPrefixLenIgnoreCase(s, "infinity")
		// Anything longer than "inf" is ok, but if we

                }
            }
            def sign = project.getProperty("sign")
            if (sign == 'skip') {
                tasks.withType(Sign)*.onlyIf { false }
            } else {
                tasks.withType(Sign)*.enabled = Boolean.parseBoolean(sign)
            }

        """

        when:
        succeeds "publishIvyPublicationToIvyRepository", "-Psign=true"
        then:

        return "sign" + capitalize(publication.getName()) + "Publication";
    }

    private Sign createSignTaskFor(CharSequence name, Action<Sign> taskConfiguration) {
        final String signTaskName = "sign" + capitalize(name);
        if (project.getTasks().getNames().contains(signTaskName)) {
            return project.getTasks().named(signTaskName, Sign.class).get();
        }

In some cases the artifact that you need to sign may not be part of a configuration.
In this case you can directly sign the task that produces the artifact to sign.

.Signing a task output
====
include::sample[dir="snippets/signing/tasks/kotlin",files="build.gradle.kts[tags=sign-task]"]
include::sample[dir="snippets/signing/tasks/groovy",files="build.gradle[tags=sign-task]"]
====

	}

	message := []byte("message")
	var noHash crypto.Hash
	signature, err := signer.Sign(zero, message, noHash)
	if err != nil {
		t.Fatalf("error from Sign(): %s", err)
	}

	signature2, err := signer.Sign(zero, message, &Options{Hash: noHash})
	if err != nil {
		t.Fatalf("error from Sign(): %s", err)
	}
	if !bytes.Equal(signature, signature2) {
		t.Errorf("signatures keys do not match")
	}

			y := r / s
			temp = x + x*y
		}
		if sign {
			return -temp
		}
		return temp
	}
	if x < 1.25 { // 0.84375 <= |x| < 1.25
		s := x - 1
		P := pa0 + s*(pa1+s*(pa2+s*(pa3+s*(pa4+s*(pa5+s*pa6)))))
		Q := 1 + s*(qa1+s*(qa2+s*(qa3+s*(qa4+s*(qa5+s*qa6)))))
		if sign {
			return -erx - P/Q
		}
		return erx + P/Q
	}
	if x >= 6 { // inf > |x| >= 6
		if sign {
			return -1
		}
		return 1
	}

			mant++
		}
		mant >>= 1
		exp++
		if mant < 1<<mantbits64 {
			return sign | mant
		}
	}
	return sign | uint64(exp-bias64)<<mantbits64 | mant&(1<<mantbits64-1)
}

func fpack32(sign, mant uint32, exp int, trunc uint32) uint32 {
	mant0, exp0, trunc0 := mant, exp, trunc
	if mant == 0 {
		return sign
	}
	for mant < 1<<mantbits32 {
		mant <<= 1
		exp--
	}

                sign(jar)
            }
        """

        when:
        executer.withEnvironmentVars([
            ORG_GRADLE_PROJECT_secretKey: secretKeyWithPassword,
            ORG_GRADLE_PROJECT_password: password
        ])
        succeeds("signJar")

        then:
        executed(":signJar")
        file("build", "libs", "sign-1.0.jar.asc").exists()
    }

	{complex(-inf, inf),
		complex(zero, zero)}, // real and imaginary sign unspecified
	{complex(inf, inf),
		complex(inf, nan)}, // real sign unspecified
	{complex(-inf, nan),
		complex(zero, zero)}, // real and imaginary sign unspecified
	{complex(inf, nan),
		complex(inf, nan)}, // real sign unspecified
	{complex(nan, zero),
		complex(nan, zero)},
	{complex(nan, 1.0),
		NaN()},