@ -0,0 +1,66 @@ | |||||
.\" Copyright (c) 1990, 1991 The Regents of the University of California. | |||||
.\" All rights reserved. | |||||
.\" | |||||
.\" This code is derived from software contributed to Berkeley by | |||||
.\" the American National Standards Committee X3, on Information | |||||
.\" Processing Systems. | |||||
.\" | |||||
.\" Redistribution and use in source and binary forms, with or without | |||||
.\" modification, are permitted provided that the following conditions | |||||
.\" are met: | |||||
.\" 1. Redistributions of source code must retain the above copyright | |||||
.\" notice, this list of conditions and the following disclaimer. | |||||
.\" 2. Redistributions in binary form must reproduce the above copyright | |||||
.\" notice, this list of conditions and the following disclaimer in the | |||||
.\" documentation and/or other materials provided with the distribution. | |||||
.\" 3. Neither the name of the University nor the names of its contributors | |||||
.\" may be used to endorse or promote products derived from this software | |||||
.\" without specific prior written permission. | |||||
.\" | |||||
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
.\" SUCH DAMAGE. | |||||
.\" | |||||
.\" $OpenBSD: imaxabs.3,v 1.1 2006/01/13 17:58:09 millert Exp $ | |||||
.\" | |||||
.Dd January 6, 2005 | |||||
.Dt IMAXABS 3 | |||||
.Os | |||||
.Sh NAME | |||||
.Nm imaxabs | |||||
.Nd integer absolute value function | |||||
.Sh SYNOPSIS | |||||
.Fd #include <inttypes.h> | |||||
.Ft int | |||||
.Fn imaxabs "int j" | |||||
.Sh DESCRIPTION | |||||
The | |||||
.Fn imaxabs | |||||
function computes the absolute value of the intmax_t variable | |||||
.Fa j . | |||||
.Sh RETURN VALUES | |||||
The | |||||
.Fn imaxabs | |||||
function returns the absolute value. | |||||
.Sh SEE ALSO | |||||
.Xr abs 3 , | |||||
.Xr cabs 3 , | |||||
.Xr floor 3 , | |||||
.Xr hypot 3 , | |||||
.Xr labs 3 , | |||||
.Xr math 3 | |||||
.Sh STANDARDS | |||||
The | |||||
.Fn abs | |||||
function conforms to | |||||
.St -ansiC-99 . | |||||
.Sh BUGS | |||||
The absolute value of the most negative integer remains negative. |
@ -0,0 +1,38 @@ | |||||
/* $OpenBSD: imaxabs.c,v 1.1 2006/01/13 17:58:09 millert Exp $ */ | |||||
/*- | |||||
* Copyright (c) 1990 The Regents of the University of California. | |||||
* All rights reserved. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* 3. Neither the name of the University nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#include <inttypes.h> | |||||
intmax_t | |||||
imaxabs(intmax_t j) | |||||
{ | |||||
return (j < 0 ? -j : j); | |||||
} |
@ -0,0 +1,67 @@ | |||||
.\" Copyright (c) 1990, 1991 The Regents of the University of California. | |||||
.\" All rights reserved. | |||||
.\" | |||||
.\" This code is derived from software contributed to Berkeley by | |||||
.\" Chris Torek and the American National Standards Committee X3, | |||||
.\" on Information Processing Systems. | |||||
.\" | |||||
.\" Redistribution and use in source and binary forms, with or without | |||||
.\" modification, are permitted provided that the following conditions | |||||
.\" are met: | |||||
.\" 1. Redistributions of source code must retain the above copyright | |||||
.\" notice, this list of conditions and the following disclaimer. | |||||
.\" 2. Redistributions in binary form must reproduce the above copyright | |||||
.\" notice, this list of conditions and the following disclaimer in the | |||||
.\" documentation and/or other materials provided with the distribution. | |||||
.\" 3. Neither the name of the University nor the names of its contributors | |||||
.\" may be used to endorse or promote products derived from this software | |||||
.\" without specific prior written permission. | |||||
.\" | |||||
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
.\" SUCH DAMAGE. | |||||
.\" | |||||
.\" $OpenBSD: imaxdiv.3,v 1.1 2006/01/13 17:58:09 millert Exp $ | |||||
.\" | |||||
.Dd January 3, 2006 | |||||
.Dt IMAXDIV 3 | |||||
.Os | |||||
.Sh NAME | |||||
.Nm imaxdiv | |||||
.Nd return quotient and remainder from division | |||||
.Sh SYNOPSIS | |||||
.Fd #include <inttypes.h> | |||||
.Ft imaxdiv_t | |||||
.Fn ldiv "intmax_t num" "intmax_t denom" | |||||
.Sh DESCRIPTION | |||||
The | |||||
.Fn imaxdiv | |||||
function computes the value | |||||
.Fa num Ns / Ns Fa denom | |||||
and returns the quotient and remainder in a structure named | |||||
.Li imaxdiv_t | |||||
that contains two | |||||
.Li intmax_t | |||||
members named | |||||
.Fa quot | |||||
and | |||||
.Fa rem . | |||||
.Sh SEE ALSO | |||||
.Xr div 3 , | |||||
.Xr ldiv 3 , | |||||
.Xr lldiv 3 , | |||||
.Xr math 3 , | |||||
.Xr qdiv 3 | |||||
.Sh STANDARDS | |||||
The | |||||
.Fn imaxdiv | |||||
function conforms to | |||||
.St -ansiC-99 . |
@ -0,0 +1,50 @@ | |||||
/* $OpenBSD: imaxdiv.c,v 1.1 2006/01/13 17:58:09 millert Exp $ */ | |||||
/* | |||||
* Copyright (c) 1990 Regents of the University of California. | |||||
* All rights reserved. | |||||
* | |||||
* This code is derived from software contributed to Berkeley by | |||||
* Chris Torek. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* 3. Neither the name of the University nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#include <inttypes.h> /* imaxdiv_t */ | |||||
imaxdiv_t | |||||
imaxdiv(intmax_t num, intmax_t denom) | |||||
{ | |||||
imaxdiv_t r; | |||||
/* see div.c for comments */ | |||||
r.quot = num / denom; | |||||
r.rem = num % denom; | |||||
if (num >= 0 && r.rem < 0) { | |||||
r.quot++; | |||||
r.rem -= denom; | |||||
} | |||||
return (r); | |||||
} |
@ -0,0 +1,67 @@ | |||||
.\" Copyright (c) 1990, 1991 The Regents of the University of California. | |||||
.\" All rights reserved. | |||||
.\" | |||||
.\" This code is derived from software contributed to Berkeley by | |||||
.\" Chris Torek and the American National Standards Committee X3, | |||||
.\" on Information Processing Systems. | |||||
.\" | |||||
.\" Redistribution and use in source and binary forms, with or without | |||||
.\" modification, are permitted provided that the following conditions | |||||
.\" are met: | |||||
.\" 1. Redistributions of source code must retain the above copyright | |||||
.\" notice, this list of conditions and the following disclaimer. | |||||
.\" 2. Redistributions in binary form must reproduce the above copyright | |||||
.\" notice, this list of conditions and the following disclaimer in the | |||||
.\" documentation and/or other materials provided with the distribution. | |||||
.\" 3. Neither the name of the University nor the names of its contributors | |||||
.\" may be used to endorse or promote products derived from this software | |||||
.\" without specific prior written permission. | |||||
.\" | |||||
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
.\" SUCH DAMAGE. | |||||
.\" | |||||
.\" $OpenBSD: lldiv.3,v 1.1 2006/01/13 17:58:09 millert Exp $ | |||||
.\" | |||||
.Dd January 3, 2006 | |||||
.Dt LLDIV 3 | |||||
.Os | |||||
.Sh NAME | |||||
.Nm lldiv | |||||
.Nd return quotient and remainder from division | |||||
.Sh SYNOPSIS | |||||
.Fd #include <stdlib.h> | |||||
.Ft lldiv_t | |||||
.Fn lldiv "long long num" "long long denom" | |||||
.Sh DESCRIPTION | |||||
The | |||||
.Fn lldiv | |||||
function computes the value | |||||
.Fa num Ns / Ns Fa denom | |||||
and returns the quotient and remainder in a structure named | |||||
.Li lldiv_t | |||||
that contains two | |||||
.Li long long integer | |||||
members named | |||||
.Fa quot | |||||
and | |||||
.Fa rem . | |||||
.Sh SEE ALSO | |||||
.Xr div 3 , | |||||
.Xr imaxdiv 3 , | |||||
.Xr ldiv 3 , | |||||
.Xr math 3 , | |||||
.Xr qdiv 3 | |||||
.Sh STANDARDS | |||||
The | |||||
.Fn lldiv | |||||
function conforms to | |||||
.St -ansiC-99 . |
@ -0,0 +1,50 @@ | |||||
/* $OpenBSD: lldiv.c,v 1.1 2006/01/13 17:58:09 millert Exp $ */ | |||||
/* | |||||
* Copyright (c) 1990 Regents of the University of California. | |||||
* All rights reserved. | |||||
* | |||||
* This code is derived from software contributed to Berkeley by | |||||
* Chris Torek. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* 3. Neither the name of the University nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#include <stdlib.h> /* lldiv_t */ | |||||
lldiv_t | |||||
lldiv(long long num, long long denom) | |||||
{ | |||||
lldiv_t r; | |||||
/* see div.c for comments */ | |||||
r.quot = num / denom; | |||||
r.rem = num % denom; | |||||
if (num >= 0 && r.rem < 0) { | |||||
r.quot++; | |||||
r.rem -= denom; | |||||
} | |||||
return (r); | |||||
} |
@ -0,0 +1,140 @@ | |||||
/* $OpenBSD: strtoimax.c,v 1.1 2006/01/13 17:58:09 millert Exp $ */ | |||||
/*- | |||||
* Copyright (c) 1992 The Regents of the University of California. | |||||
* All rights reserved. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* 3. Neither the name of the University nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#include <ctype.h> | |||||
#include <errno.h> | |||||
#include <inttypes.h> | |||||
/* | |||||
* Convert a string to an intmax_t | |||||
* | |||||
* Ignores `locale' stuff. Assumes that the upper and lower case | |||||
* alphabets and digits are each contiguous. | |||||
*/ | |||||
intmax_t | |||||
strtoimax(const char *nptr, char **endptr, int base) | |||||
{ | |||||
const char *s; | |||||
intmax_t acc, cutoff; | |||||
int c; | |||||
int neg, any, cutlim; | |||||
/* | |||||
* Skip white space and pick up leading +/- sign if any. | |||||
* If base is 0, allow 0x for hex and 0 for octal, else | |||||
* assume decimal; if base is already 16, allow 0x. | |||||
*/ | |||||
s = nptr; | |||||
do { | |||||
c = (unsigned char) *s++; | |||||
} while (isspace(c)); | |||||
if (c == '-') { | |||||
neg = 1; | |||||
c = *s++; | |||||
} else { | |||||
neg = 0; | |||||
if (c == '+') | |||||
c = *s++; | |||||
} | |||||
if ((base == 0 || base == 16) && | |||||
c == '0' && (*s == 'x' || *s == 'X')) { | |||||
c = s[1]; | |||||
s += 2; | |||||
base = 16; | |||||
} | |||||
if (base == 0) | |||||
base = c == '0' ? 8 : 10; | |||||
/* | |||||
* Compute the cutoff value between legal numbers and illegal | |||||
* numbers. That is the largest legal value, divided by the | |||||
* base. An input number that is greater than this value, if | |||||
* followed by a legal input character, is too big. One that | |||||
* is equal to this value may be valid or not; the limit | |||||
* between valid and invalid numbers is then based on the last | |||||
* digit. For instance, if the range for intmax_t is | |||||
* [-9223372036854775808..9223372036854775807] and the input base | |||||
* is 10, cutoff will be set to 922337203685477580 and cutlim to | |||||
* either 7 (neg==0) or 8 (neg==1), meaning that if we have | |||||
* accumulated a value > 922337203685477580, or equal but the | |||||
* next digit is > 7 (or 8), the number is too big, and we will | |||||
* return a range error. | |||||
* | |||||
* Set any if any `digits' consumed; make it negative to indicate | |||||
* overflow. | |||||
*/ | |||||
cutoff = neg ? INTMAX_MIN : INTMAX_MAX; | |||||
cutlim = cutoff % base; | |||||
cutoff /= base; | |||||
if (neg) { | |||||
if (cutlim > 0) { | |||||
cutlim -= base; | |||||
cutoff += 1; | |||||
} | |||||
cutlim = -cutlim; | |||||
} | |||||
for (acc = 0, any = 0;; c = (unsigned char) *s++) { | |||||
if (isdigit(c)) | |||||
c -= '0'; | |||||
else if (isalpha(c)) | |||||
c -= isupper(c) ? 'A' - 10 : 'a' - 10; | |||||
else | |||||
break; | |||||
if (c >= base) | |||||
break; | |||||
if (any < 0) | |||||
continue; | |||||
if (neg) { | |||||
if (acc < cutoff || (acc == cutoff && c > cutlim)) { | |||||
any = -1; | |||||
acc = INTMAX_MIN; | |||||
errno = ERANGE; | |||||
} else { | |||||
any = 1; | |||||
acc *= base; | |||||
acc -= c; | |||||
} | |||||
} else { | |||||
if (acc > cutoff || (acc == cutoff && c > cutlim)) { | |||||
any = -1; | |||||
acc = INTMAX_MAX; | |||||
errno = ERANGE; | |||||
} else { | |||||
any = 1; | |||||
acc *= base; | |||||
acc += c; | |||||
} | |||||
} | |||||
} | |||||
if (endptr != 0) | |||||
*endptr = (char *) (any ? s - 1 : nptr); | |||||
return (acc); | |||||
} |
@ -0,0 +1,102 @@ | |||||
/* $OpenBSD: strtoumax.c,v 1.1 2006/01/13 17:58:09 millert Exp $ */ | |||||
/*- | |||||
* Copyright (c) 1992 The Regents of the University of California. | |||||
* All rights reserved. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* 3. Neither the name of the University nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#include <ctype.h> | |||||
#include <errno.h> | |||||
#include <inttypes.h> | |||||
/* | |||||
* Convert a string to a uintmax_t. | |||||
* | |||||
* Ignores `locale' stuff. Assumes that the upper and lower case | |||||
* alphabets and digits are each contiguous. | |||||
*/ | |||||
uintmax_t | |||||
strtoumax(const char *nptr, char **endptr, int base) | |||||
{ | |||||
const char *s; | |||||
uintmax_t acc, cutoff; | |||||
int c; | |||||
int neg, any, cutlim; | |||||
/* | |||||
* See strtoq for comments as to the logic used. | |||||
*/ | |||||
s = nptr; | |||||
do { | |||||
c = (unsigned char) *s++; | |||||
} while (isspace(c)); | |||||
if (c == '-') { | |||||
neg = 1; | |||||
c = *s++; | |||||
} else { | |||||
neg = 0; | |||||
if (c == '+') | |||||
c = *s++; | |||||
} | |||||
if ((base == 0 || base == 16) && | |||||
c == '0' && (*s == 'x' || *s == 'X')) { | |||||
c = s[1]; | |||||
s += 2; | |||||
base = 16; | |||||
} | |||||
if (base == 0) | |||||
base = c == '0' ? 8 : 10; | |||||
cutoff = UINTMAX_MAX / (uintmax_t)base; | |||||
cutlim = UINTMAX_MAX % (uintmax_t)base; | |||||
for (acc = 0, any = 0;; c = (unsigned char) *s++) { | |||||
if (isdigit(c)) | |||||
c -= '0'; | |||||
else if (isalpha(c)) | |||||
c -= isupper(c) ? 'A' - 10 : 'a' - 10; | |||||
else | |||||
break; | |||||
if (c >= base) | |||||
break; | |||||
if (any < 0) | |||||
continue; | |||||
if (acc > cutoff || (acc == cutoff && c > cutlim)) { | |||||
any = -1; | |||||
acc = UINTMAX_MAX; | |||||
errno = ERANGE; | |||||
} else { | |||||
any = 1; | |||||
acc *= (uintmax_t)base; | |||||
acc += c; | |||||
} | |||||
} | |||||
if (neg && any > 0) | |||||
acc = -acc; | |||||
if (endptr != 0) | |||||
*endptr = (char *) (any ? s - 1 : nptr); | |||||
return (acc); | |||||
} |