1# $NetBSD: cond-cmp-numeric-eq.mk,v 1.1 2020/08/23 13:50:17 rillig Exp $ 2# 3# Tests for numeric comparisons with the == operator in .if conditions. 4 5# This comparison yields the same result, whether numeric or character-based. 6.if 1 == 1 7.else 8.error 9.endif 10 11# This comparison yields the same result, whether numeric or character-based. 12.if 1 == 2 13.error 14.endif 15 16.if 2 == 1 17.error 18.endif 19 20# Scientific notation is supported, as per strtod. 21.if 2e7 == 2000e4 22.else 23.error 24.endif 25 26.if 2000e4 == 2e7 27.else 28.error 29.endif 30 31# Trailing zeroes after the decimal point are irrelevant for the numeric 32# value. 33.if 3.30000 == 3.3 34.else 35.error 36.endif 37 38.if 3.3 == 3.30000 39.else 40.error 41.endif 42 43# As of 2020-08-23, numeric comparison is implemented as parsing both sides 44# as double, and then performing a normal comparison. The range of double is 45# typically 16 or 17 significant digits, therefore these two numbers seem to 46# be equal. 47.if 1.000000000000000001 == 1.000000000000000002 48.else 49.error 50.endif 51 52all: 53 @:; 54