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47 lines
1.6 KiB
Diff
47 lines
1.6 KiB
Diff
Only use lround in C99 programs.
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diff --git a/gfx/cairo/cairo/src/cairo-misc.c b/gfx/cairo/cairo/src/cairo-misc.c
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--- a/gfx/cairo/cairo/src/cairo-misc.c
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+++ b/gfx/cairo/cairo/src/cairo-misc.c
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@@ -478,17 +478,17 @@ _cairo_operator_bounded_by_either (cairo
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case CAIRO_OPERATOR_IN:
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case CAIRO_OPERATOR_DEST_IN:
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case CAIRO_OPERATOR_DEST_ATOP:
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return 0;
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}
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}
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-#if DISABLE_SOME_FLOATING_POINT
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+#if DISABLE_SOME_FLOATING_POINT || __STDC_VERSION__ < 199901L
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/* This function is identical to the C99 function lround(), except that it
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* performs arithmetic rounding (floor(d + .5) instead of away-from-zero rounding) and
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* has a valid input range of (INT_MIN, INT_MAX] instead of
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* [INT_MIN, INT_MAX]. It is much faster on both x86 and FPU-less systems
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* than other commonly used methods for rounding (lround, round, rint, lrint
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* or float (d + 0.5)).
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*
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* The reason why this function is much faster on x86 than other
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diff --git a/gfx/cairo/cairo/src/cairoint.h b/gfx/cairo/cairo/src/cairoint.h
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--- a/gfx/cairo/cairo/src/cairoint.h
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+++ b/gfx/cairo/cairo/src/cairoint.h
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@@ -969,17 +969,17 @@ _cairo_restrict_value (double value, dou
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* away from 0. _cairo_round rounds halfway cases toward negative infinity.
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* This matches the rounding behaviour of _cairo_lround. */
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static inline double cairo_const
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_cairo_round (double r)
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{
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return floor (r + .5);
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}
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-#if DISABLE_SOME_FLOATING_POINT
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+#if DISABLE_SOME_FLOATING_POINT || __STDC_VERSION__ < 199901L
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cairo_private int
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_cairo_lround (double d) cairo_const;
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#else
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#define _cairo_lround lround
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#endif
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cairo_private uint16_t
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_cairo_half_from_float (float f) cairo_const;
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