Signal Approximation & Visualization

C program that reads signal parameters, displays a grid of theoretical vs approximated signals, and finds the maximum using dichotomic search.

Author: Axel Fouet

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Build & run

make        # compile
./projet    # run

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Features

• Input validation — reads and checks parameters via saisie_val and detec_erreur
• Signal display — prints a grid comparing theoretical (_thr) and approximated (_sum) signals
• Max search — recursive dichotomic search (max_dicho) to find the signal maximum over one period

Supported signals

• TRIANGLE — no discontinuity, max converges to 1
• SAWTOOTH and SQUARE — discontinuities near the maximum cause the Gibbs phenomenon, max converges to ≈ 1.18

Complexity

Task	Complexity
Fill signal grid	O(nbL × nbN)
Display grid	O(nbL²)
Overall task 2	O(nbL² + nbL × nbN)