50 lines
955 B
Makefile
50 lines
955 B
Makefile
# $NetBSD: cond-cmp-numeric-ne.mk,v 1.3 2023/09/07 05:36:33 rillig Exp $
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#
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# Tests for numeric comparisons with the != operator in .if conditions.
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# When both sides are equal, the != operator always yields false.
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.if 1 != 1
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. error
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.endif
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# This comparison yields the same result, whether numeric or character-based.
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.if 1 != 2
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.else
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. error
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.endif
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.if 2 != 1
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.else
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. error
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.endif
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# Scientific notation is supported, as per strtod.
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.if 2e7 != 2000e4
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. error
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.endif
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.if 2000e4 != 2e7
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. error
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.endif
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# Trailing zeroes after the decimal point are irrelevant for the numeric
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# value.
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.if 3.30000 != 3.3
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. error
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.endif
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.if 3.3 != 3.30000
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. error
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.endif
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# Numeric comparison works by parsing both sides
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# as double, and then performing a normal comparison. The range of double is
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# typically 16 or 17 significant digits, therefore these two numbers seem to
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# be equal.
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.if 1.000000000000000001 != 1.000000000000000002
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. error
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.endif
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all:
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@:;
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