30 lines
1.1 KiB
C
30 lines
1.1 KiB
C
/* $NetBSD: platform_ldbl128.c,v 1.6 2023/07/05 11:42:14 rillig Exp $ */
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# 3 "platform_ldbl128.c"
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/*
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* Test features that only apply to platforms that have 128-bit long double.
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*/
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/* lint1-extra-flags: -c -h -a -p -b -r -z -X 351 */
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/* lint1-only-if: ldbl128 */
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/* CONSTCOND */
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typedef int bits_per_byte[((unsigned char)-1) == 255 ? 1 : -1];
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typedef int bytes_per_long_double[sizeof(long double) == 16 ? 1 : -1];
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/*
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* Platforms with 128-bit 'long double' typically use IEEE 754-2008, which has
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* 1 bit sign + 15 bit exponent + 112 bit normalized mantissa. This means the
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* maximum representable value is 1.1111111(bin) * 2^16383, which is about
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* 1.189e4932. This is in the same range as for 96-bit 'long double', as the
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* exponent range is the same.
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*/
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/* expect+1: warning: floating-point constant out of range [248] */
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double larger_than_ldbl = 1e4933;
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/* expect+1: warning: floating-point constant out of range [248] */
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long double larger_than_ldbl_l = 1e4933L;
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/* expect+1: warning: floating-point constant out of range [248] */
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double larger_than_dbl = 1e4932;
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/* Fits in 'long double' but not in 'double'. */
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long double larger_than_dbl_l = 1e4932L;
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