©ISO/IEC ISO/IEC 9899:1999 (E)
6.10.7 Null directive ....................160
6.10.8 Predefined macro names ................160
6.10.9 Pragma operator ...................161
6.11 Future language directions ..................163
6.11.1 Floating types ....................163
6.11.2 Linkages of identifiers .................163
6.11.3 External names ...................163
6.11.4 Character escape sequences ..............163
6.11.5 Storage-class specifiers ................163
6.11.6 Function declarators .................163
6.11.7 Function definitions ..................163
6.11.8 Pragma directives ..................163
6.11.9 Predefined macro names ................163
7. Library .............................164
7.1 Introduction ........................164
7.1.1 Definitions of terms ..................164
7.1.2 Standard headers ...................165
7.1.3 Reserved identifiers ..................166
7.1.4 Use of library functions ................166
7.2 Diagnostics <assert.h> ..................169
7.2.1 Program diagnostics .................169
7.3 Complex arithmetic <complex.h> ..............170
7.3.1 Introduction .....................170
7.3.2 Conventions .....................171
7.3.3 Branch cuts .....................171
7.3.4 The CX_LIMITED_RANGE pragma ...........171
7.3.5 Trigonometric functions ................172
7.3.6 Hyperbolic functions .................174
7.3.7 Exponential and logarithmic functions ..........176
7.3.8 Power and absolute-value functions ...........177
7.3.9 Manipulation functions ................178
7.4 Character handling <ctype.h> ................181
7.4.1 Character classification functions ............181
7.4.2 Character case mapping functions ............184
7.5 Errors <errno.h> .....................186
7.6 Floating-point environment <fenv.h> .............187
7.6.1 The FENV_ACCESS pragma ..............189
7.6.2 Floating-point exceptions ...............190
7.6.3 Rounding ......................192
7.6.4 Environment ....................194
7.7 Characteristics of floating types <float.h> ...........196
7.8 Format conversion of integer types <inttypes.h> ........197
7.8.1 Macros for format specifiers ..............197
7.8.2 Functions for greatest-width integer types .........198
Contents v
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