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      1 # $NetBSD: cond-cmp-numeric-ne.mk,v 1.3 2023/09/07 05:36:33 rillig Exp $
      2 #
      3 # Tests for numeric comparisons with the != operator in .if conditions.
      4 
      5 # When both sides are equal, the != operator always yields false.
      6 .if 1 != 1
      7 .  error
      8 .endif
      9 
     10 # This comparison yields the same result, whether numeric or character-based.
     11 .if 1 != 2
     12 .else
     13 .  error
     14 .endif
     15 
     16 .if 2 != 1
     17 .else
     18 .  error
     19 .endif
     20 
     21 # Scientific notation is supported, as per strtod.
     22 .if 2e7 != 2000e4
     23 .  error
     24 .endif
     25 
     26 .if 2000e4 != 2e7
     27 .  error
     28 .endif
     29 
     30 # Trailing zeroes after the decimal point are irrelevant for the numeric
     31 # value.
     32 .if 3.30000 != 3.3
     33 .  error
     34 .endif
     35 
     36 .if 3.3 != 3.30000
     37 .  error
     38 .endif
     39 
     40 # Numeric comparison works by parsing both sides
     41 # as double, and then performing a normal comparison.  The range of double is
     42 # typically 16 or 17 significant digits, therefore these two numbers seem to
     43 # be equal.
     44 .if 1.000000000000000001 != 1.000000000000000002
     45 .  error
     46 .endif
     47 
     48 all:
     49 	@:;
     50