tgamma_spec() coverage

specification Unifloat *tgamma_spec( CallContext context, Unifloat *x, ErrorCode *errno )

coverages	branches	failures	hits/fails
C	X IS NORMAL POSITIVE		6
	X IS NEGATIVE	failure 45: Requirement failed: {tgammaf.05} If x is a negative integer a NaN shall be returned failure 47: Requirement failed: {tgamma.05} If x is a negative integer a NaN shall be returned failure 49: Requirement failed: {tgammal.05} If x is a negative integer a NaN shall be returned	3/3
	X IS ZERO		3
	X IS NAN		3
	X IS POSITIVE INFINITY		3
	X IS NEGATIVE INFINITY	failure 46: Requirement failed: {tgammaf.11.01.01} Function executed successfully with EOK error code, while `(x->sign == -1) && (!isNan_Unifloat(x)) == true` means that EDOM SHALL be set failure 48: Requirement failed: {tgamma.11.01.01} Function executed successfully with EOK error code, while `(x->sign == -1) && (!isNan_Unifloat(x)) == true` means that EDOM SHALL be set failure 50: Requirement failed: {tgammal.11.01.01} Function executed successfully with EOK error code, while `(x->sign == -1) && (!isNan_Unifloat(x)) == true` means that EDOM SHALL be set	3/3
	100% (6/6)		21/6