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box-drawings: handle architecture with soft-float

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Currently, architecture using soft-floats doesn't support instructions
FE_INVALID, FE_DIVBYZERO, FE_OVERFLOW and FE_UNDERFLOW and so building
on those architectures results with a build error.
As the sqrt math function should set errno to EDOM if an error occurs,
fetestexcept shouldn't be mandatory.

This commit removes the float environment error handling.

Signed-off-by: Thomas Bonnefille <thomas.bonnefille@bootlin.com>
This commit is contained in:
Thomas Bonnefille 2025-02-04 09:48:13 +01:00 • committed by Daniel Eklöf
parent 8de378963b
commit 9443ac7e29
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1 changed files with 1 additions and 3 deletions
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4
box-drawing.c
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@ -1462,14 +1462,12 @@ draw_box_drawings_light_arc(struct buf *buf, char32_t wc)
*/
for (double i = y_min*16; i <= y_max*16; i++) {
errno = 0;
feclearexcept(FE_ALL_EXCEPT);
double y = i / 16.;
double x = circle_hemisphere * sqrt(c_r2 - (y - c_y) * (y - c_y)) + c_x;
/* See math_error(7) */
if (errno != 0 ||
fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW))
if (errno != 0)
{
continue;
}