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# $NetBSD: cond-cmp-numeric.mk,v 1.4 2020/11/08 22:56:16 rillig Exp $
#
# Tests for numeric comparisons in .if conditions.
.MAKEFLAGS: -dc
# The ${:U...} on the left-hand side is necessary for the parser.
# Even if strtod(3) parses "INF" as +Infinity, make does not accept this
# since it is not really a number; see TryParseNumber.
.if !(${:UINF} > 1e100)
. error
.endif
# Neither is NaN a number; see TryParseNumber.
.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.
#
# XXX: The warning message does not mention the actual operator.
.if 123 ! 123
. error
.else
. error
.endif
all:
@:;
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