# $NetBSD: cond-cmp-numeric.mk,v 1.9 2025/06/28 22:39:28 rillig Exp $ # # Tests for numeric comparisons in .if conditions. # # See also: # cond-token-number.mk .MAKEFLAGS: -dc # The ${:U...} on the left-hand side is necessary for the parser. # Even if strtod(3) parses "INF" as +Infinity, make does not accept this # since it is not really a number; see TryParseNumber. # expect+1: Comparison with ">" requires both operands "INF" and "1e100" to be numeric .if !(${:UINF} > 1e100) . error .endif # Neither is NaN a number; see TryParseNumber. # expect+1: Comparison with ">" requires both operands "NaN" and "NaN" to be numeric .if ${:UNaN} > NaN . error .endif # Since NaN is not parsed as a number, both operands are interpreted # as strings and are therefore equal. If they were parsed as numbers, # they would compare unequal, since NaN is unequal to any and everything, # including itself. .if !(${:UNaN} == NaN) . error .endif # The parsing code in CondParser_Comparison only performs a light check on # whether the operator is valid, leaving the rest of the work to the # evaluation functions EvalCompareNum and EvalCompareStr. Ensure that this # parse error is properly reported. # expect+1: Malformed conditional "123 ! 123" .if 123 ! 123 . error .else . error .endif # Leading spaces are allowed for numbers. # See EvalCompare and TryParseNumber. .if ${:U 123} < 124 .else . error .endif # Trailing spaces are NOT allowed for numbers. # See EvalCompare and TryParseNumber. # expect+1: Comparison with "<" requires both operands "123 " and "124" to be numeric .if ${:U123 } < 124 . error .else . error .endif all: