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commit c5c666f34939d4bbf73aac8b753ab39621ebf33c
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Mon Dec 20 14:37:26 2021 -0800
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s_sincosf.h: Change pio4 type to float [BZ #28713]
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s_cosf.c and s_sinf.c have
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if (abstop12 (y) < abstop12 (pio4))
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where abstop12 takes a float argument, but pio4 is static const double.
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pio4 is used only in calls to abstop12 and never in arithmetic. Apply
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-static const double pio4 = 0x1.921FB54442D18p-1;
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+static const float pio4 = 0x1.921FB6p-1f;
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to fix:
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FAIL: math/test-float-cos
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FAIL: math/test-float-sin
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FAIL: math/test-float-sincos
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FAIL: math/test-float32-cos
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FAIL: math/test-float32-sin
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FAIL: math/test-float32-sincos
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when compiling with GCC 12.
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Reviewed-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
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(cherry picked from commit d3e4f5a1014db09ff1c62c6506f92cba469e193d)
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diff --git a/sysdeps/ieee754/flt-32/s_sincosf.h b/sysdeps/ieee754/flt-32/s_sincosf.h
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index 125ab7f846c463c6..372d8542c2c9a9c7 100644
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--- a/sysdeps/ieee754/flt-32/s_sincosf.h
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+++ b/sysdeps/ieee754/flt-32/s_sincosf.h
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@@ -24,7 +24,7 @@
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/* 2PI * 2^-64. */
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static const double pi63 = 0x1.921FB54442D18p-62;
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/* PI / 4. */
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-static const double pio4 = 0x1.921FB54442D18p-1;
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+static const float pio4 = 0x1.921FB6p-1f;
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/* Polynomial data (the cosine polynomial is negated in the 2nd entry). */
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extern const sincos_t __sincosf_table[2] attribute_hidden;
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