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C166 User's Guide

C166 Introduction Compiling Programs Language Extensions Preprocessor Advanced Programming Error Messages Library Reference Library Files Source Code Standard Types jmp_buf ptrdiff_t size_t va_list wchar_t Macros HARRAY HVAR MARRAY MVAR XARRAY XVAR Routines By Category Buffer Manipulation Routines Character Routines Data Conversion Routines Intrinsic Routines Math Routines Memory Allocation Routines Stream I/O Routines String Routines Variable Length Argument Routines Miscellaneous Routines Include Files SFR Definitions absacc.h assert.h ctype.h float.h intrins.h limits.h math.h membox.h setjmp.h stdarg.h stddef.h stdio.h stdlib.h string.h Reference _alloc_boxf _alloc_boxh _alloc_boxn _atomic_ _bfld_ _calloc_boxf _calloc_boxh _calloc_boxn _chkdouble_ _chkfloat_ _crol_ _cror_ _diswdt_ _einit_ _endatomic_ _free_boxf _free_boxh _free_boxn _getkey _idle_ _init_boxf _init_boxh _init_boxn _irol_ _iror_ _lrol_ _lror_ _nop_ _pop_ _prior_ _priord_ _push_ _pwrdn_ _sof_ _srvwdt_ _testclear_ _testset_ _tolower _toupper _trap_ abs acos asin assert atan atan2 atof atoi atol calloc calloc_b ceil cos cosh exp fabs floor fmemccpy fmemchr fmemcmp fmemcpy fmemmove fmemset fmod free free_b fstrcat fstrchr fstrcmp fstrcpy fstrcspn fstrlen fstrncat fstrncmp fstrncpy fstrpbrk fstrpos fstrrchr fstrrpbrk fstrrpos fstrspn getchar gets hmemcmp hmemcpy hstrcmp hstrcpy init_mempool init_mempool_b isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper isxdigit labs log log10 longjmp malloc malloc_b memccpy memchr memcmp memcpy memmove memset modf offsetof pow printf putchar puts rand realloc realloc_b scanf setjmp sin sinh sprintf sqrt srand sscanf strcat strchr strcmp strcpy strcspn strlen strncat strncmp strncpy strpbrk strpos strrchr strrpbrk strrpos strspn strstr strtod strtol strtoul tan tanh toascii toint tolower toupper ungetchar va_arg va_end va_start vprintf vsprintf xcalloc xfree xinit_mempool xmalloc xmemccpy xmemchr xmemcmp xmemcpy xmemmove xmemset xrealloc xstrcmp xstrcpy xstrlen xstrncpy Appendix

Math Routines

Routine Attributes Description
acos reentrant Calculates the arc cosine of a specified number.
asin reentrant Calculates the arc sine of a specified number.
atan reentrant Calculates the arc tangent of a specified number.
atan2 reentrant Calculates the arc tangent of a fraction.
ceil reentrant Finds the integer ceiling of a specified number.
cos reentrant Calculates the cosine of a specified number.
cosh reentrant Calculates the hyperbolic cosine of a specified number.
exp reentrant Calculates the exponential function of a specified number.
fabs reentrant Finds the absolute value of a specified number.
floor reentrant Finds the largest integer less than or equal to a specified number.
fmod reentrant Calculates the floating-point remainder.
log reentrant Calculates the natural logarithm of a specified number.
log10 reentrant Calculates the common logarithm of a specified number.
modf reentrant Generates integer and fractional components of a specified number.
pow reentrant Calculates a value raised to a power.
rand reentrant Generates a pseudo random number.
sin reentrant Calculates the sine of a specified number.
sinh reentrant Calculates the hyperbolic sine of a specified number.
srand reentrant Initializes the pseudo random number generator.
sqrt reentrant Calculates the square root of a specified number.
tan reentrant Calculates the tangent of a specified number.
tanh reentrant Calculates the hyperbolic tangent of a specified number.
_chkdouble_ intrinsic, reentrant Checks the status of a floating-point number of type double.
_chkfloat_ intrinsic, reentrant Checks the status of a floating-point number of type float.
_crol_ intrinsic, reentrnt Rotates an unsigned char left a specified number of bits.
_cror_ intrinsic, reentrant Rotates an unsigned char right a specified number of bits.
_irol_ intrinsic, reentrant Rotates an unsigned int left a specified number of bits.
_iror_ intrinsic, reentrant Rotates an unsigned int right a specified number of bits.
_lrol_ intrinsic, reentrant Rotates an unsigned long left a specified number of bits.
_lror_ intrinsic, reentrant Rotates an unsigned long right a specified number of bits.

The math routines perform common mathematical calculations. Most of these routines work with floating-point values and include the floating-point libraries and support routines.

All of these routines are implemented as functions. Most are prototyped in the math.h include file. The rand and srand functions are prototyped in the stdlib.h include file.

The _crol_, _cror_, _irol_, _iror_, _lrol_, and _lror_ functions are prototyped in the intrins.h include file.

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