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Yet further adjust degree-based trig functions for more portability.

Buildfarm member cockatiel is still saying that cosd(60) isn't 0.5.What seems likely is that the subexpression (1.0 - cos(x)) isn't beingrounded to double width before more arithmetic is done on it, so forcethat by storing it into a variable.

1 parent360f67d commit0034757Copy full SHA for 0034757

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src/backend/utils/adt
- float.c

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`‎src/backend/utils/adt/float.c‎`

Lines changed: 3 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -2000,7 +2000,9 @@ sind_0_to_30(double x)`
`2000`	`2000`	`staticdouble`
`2001`	`2001`	`cosd_0_to_60(doublex)`
`2002`	`2002`	`{`
`2003`		`-return1.0- ((1.0-cos(x*RADIANS_PER_DEGREE)) /one_minus_cos_60) /2.0;`
	`2003`	`+float8one_minus_cos_x=1.0-cos(x*RADIANS_PER_DEGREE);`
	`2004`	`+`
	`2005`	`+return1.0- (one_minus_cos_x /one_minus_cos_60) /2.0;`
`2004`	`2006`	`}`
`2005`	`2007`
`2006`	`2008`

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Commit0034757

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`‎src/backend/utils/adt/float.c‎`

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