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comparison gcc/doc/libgcc.texi @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents f6334be47118
children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 @c Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010 1 @c Copyright (C) 2003-2017 Free Software Foundation, Inc.
2 @c Free Software Foundation, Inc.
3 @c This is part of the GCC manual. 2 @c This is part of the GCC manual.
4 @c For copying conditions, see the file gcc.texi. 3 @c For copying conditions, see the file gcc.texi.
5 @c Contributed by Aldy Hernandez <aldy@quesejoda.com> 4 @c Contributed by Aldy Hernandez <aldy@quesejoda.com>
6 5
7 @node Libgcc 6 @node Libgcc
104 @deftypefnx {Runtime Function} {unsigned long long} __udivti3 (unsigned long long @var{a}, unsigned long long @var{b}) 103 @deftypefnx {Runtime Function} {unsigned long long} __udivti3 (unsigned long long @var{a}, unsigned long long @var{b})
105 These functions return the quotient of the unsigned division of @var{a} 104 These functions return the quotient of the unsigned division of @var{a}
106 and @var{b}. 105 and @var{b}.
107 @end deftypefn 106 @end deftypefn
108 107
109 @deftypefn {Runtime Function} {unsigned long} __udivmoddi3 (unsigned long @var{a}, unsigned long @var{b}, unsigned long *@var{c}) 108 @deftypefn {Runtime Function} {unsigned long} __udivmoddi4 (unsigned long @var{a}, unsigned long @var{b}, unsigned long *@var{c})
110 @deftypefnx {Runtime Function} {unsigned long long} __udivti3 (unsigned long long @var{a}, unsigned long long @var{b}, unsigned long long *@var{c}) 109 @deftypefnx {Runtime Function} {unsigned long long} __udivmodti4 (unsigned long long @var{a}, unsigned long long @var{b}, unsigned long long *@var{c})
111 These functions calculate both the quotient and remainder of the unsigned 110 These functions calculate both the quotient and remainder of the unsigned
112 division of @var{a} and @var{b}. The return value is the quotient, and 111 division of @var{a} and @var{b}. The return value is the quotient, and
113 the remainder is placed in variable pointed to by @var{c}. 112 the remainder is placed in variable pointed to by @var{c}.
114 @end deftypefn 113 @end deftypefn
115 114
176 that is @code{@var{a} - @var{b}}. 175 that is @code{@var{a} - @var{b}}.
177 @end deftypefn 176 @end deftypefn
178 177
179 @subsection Bit operations 178 @subsection Bit operations
180 179
181 @deftypefn {Runtime Function} int __clzsi2 (int @var{a}) 180 @deftypefn {Runtime Function} int __clzsi2 (unsigned int @var{a})
182 @deftypefnx {Runtime Function} int __clzdi2 (long @var{a}) 181 @deftypefnx {Runtime Function} int __clzdi2 (unsigned long @var{a})
183 @deftypefnx {Runtime Function} int __clzti2 (long long @var{a}) 182 @deftypefnx {Runtime Function} int __clzti2 (unsigned long long @var{a})
184 These functions return the number of leading 0-bits in @var{a}, starting 183 These functions return the number of leading 0-bits in @var{a}, starting
185 at the most significant bit position. If @var{a} is zero, the result is 184 at the most significant bit position. If @var{a} is zero, the result is
186 undefined. 185 undefined.
187 @end deftypefn 186 @end deftypefn
188 187
189 @deftypefn {Runtime Function} int __ctzsi2 (int @var{a}) 188 @deftypefn {Runtime Function} int __ctzsi2 (unsigned int @var{a})
190 @deftypefnx {Runtime Function} int __ctzdi2 (long @var{a}) 189 @deftypefnx {Runtime Function} int __ctzdi2 (unsigned long @var{a})
191 @deftypefnx {Runtime Function} int __ctzti2 (long long @var{a}) 190 @deftypefnx {Runtime Function} int __ctzti2 (unsigned long long @var{a})
192 These functions return the number of trailing 0-bits in @var{a}, starting 191 These functions return the number of trailing 0-bits in @var{a}, starting
193 at the least significant bit position. If @var{a} is zero, the result is 192 at the least significant bit position. If @var{a} is zero, the result is
194 undefined. 193 undefined.
195 @end deftypefn 194 @end deftypefn
196 195
197 @deftypefn {Runtime Function} int __ffsdi2 (long @var{a}) 196 @deftypefn {Runtime Function} int __ffsdi2 (unsigned long @var{a})
198 @deftypefnx {Runtime Function} int __ffsti2 (long long @var{a}) 197 @deftypefnx {Runtime Function} int __ffsti2 (unsigned long long @var{a})
199 These functions return the index of the least significant 1-bit in @var{a}, 198 These functions return the index of the least significant 1-bit in @var{a},
200 or the value zero if @var{a} is zero. The least significant bit is index 199 or the value zero if @var{a} is zero. The least significant bit is index
201 one. 200 one.
202 @end deftypefn 201 @end deftypefn
203 202
204 @deftypefn {Runtime Function} int __paritysi2 (int @var{a}) 203 @deftypefn {Runtime Function} int __paritysi2 (unsigned int @var{a})
205 @deftypefnx {Runtime Function} int __paritydi2 (long @var{a}) 204 @deftypefnx {Runtime Function} int __paritydi2 (unsigned long @var{a})
206 @deftypefnx {Runtime Function} int __parityti2 (long long @var{a}) 205 @deftypefnx {Runtime Function} int __parityti2 (unsigned long long @var{a})
207 These functions return the value zero if the number of bits set in 206 These functions return the value zero if the number of bits set in
208 @var{a} is even, and the value one otherwise. 207 @var{a} is even, and the value one otherwise.
209 @end deftypefn 208 @end deftypefn
210 209
211 @deftypefn {Runtime Function} int __popcountsi2 (int @var{a}) 210 @deftypefn {Runtime Function} int __popcountsi2 (unsigned int @var{a})
212 @deftypefnx {Runtime Function} int __popcountdi2 (long @var{a}) 211 @deftypefnx {Runtime Function} int __popcountdi2 (unsigned long @var{a})
213 @deftypefnx {Runtime Function} int __popcountti2 (long long @var{a}) 212 @deftypefnx {Runtime Function} int __popcountti2 (unsigned long long @var{a})
214 These functions return the number of bits set in @var{a}. 213 These functions return the number of bits set in @var{a}.
215 @end deftypefn 214 @end deftypefn
216 215
217 @deftypefn {Runtime Function} int32_t __bswapsi2 (int32_t @var{a}) 216 @deftypefn {Runtime Function} int32_t __bswapsi2 (int32_t @var{a})
218 @deftypefnx {Runtime Function} int64_t __bswapdi2 (int64_t @var{a}) 217 @deftypefnx {Runtime Function} int64_t __bswapdi2 (int64_t @var{a})
500 499
501 The software decimal floating point library implements IEEE 754-2008 500 The software decimal floating point library implements IEEE 754-2008
502 decimal floating point arithmetic and is only activated on selected 501 decimal floating point arithmetic and is only activated on selected
503 targets. 502 targets.
504 503
505 The software decimal floating point library supports either DPD 504 The software decimal floating point library supports either DPD
506 (Densely Packed Decimal) or BID (Binary Integer Decimal) encoding 505 (Densely Packed Decimal) or BID (Binary Integer Decimal) encoding
507 as selected at configure time. 506 as selected at configure time.
508 507
509 508
510 @subsection Arithmetic functions 509 @subsection Arithmetic functions
511 510