Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30547-1b347192b6) Lines: 1467 1530 95.9 % Date: 2025-11-13 09:22:32 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15273
_sqrtnr	22708
polrootsbound_i	27291
polrootsbound	27298
RgX_normalize1	35899
ZX_realroots_irred	48652
realroots	50627
ZX_sturm_irred	116773
ZX_sturm_i	123168
polsolve	166720
split_pols	166722
splitcauchy	166733
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267058
QX_complex_roots	296413
_gen_zero	326156
fix_roots1	398467
conformal_mapping	467918
split_1	467918
split_0_1	468278
split_0_2	468278
logradius	493966
update_radius	493968
optimize_split	493970
parameters	493970
split_2	493970
split_fromU	493970
split_0	494334
refine_F	502349
dft	502361
all_roots	536120
clean_roots	536169
a_posteriori_errors	537221
fix_roots	537226
mygprec_special	537227
logmodulus	606753
logpre_modulus	606753
abs_update_r	778677
ind_maxlog2	902633
isexactscalar	931714
isreal	961888
initdft	996327
dual_modulus	1012432
usp	1126046
ZX_sturmpart	1128255
check_ab	1178882
tocomplex	1213964
isvalidcoeff	1230229
ZX_Uspensky	1313895
conformal_basecase	1403860
conformal_pol	1403981
fujiwara_bound_real	1406924
split_complete	1525888
homothetie	1610071
append_clone	1614176
logmin_modulus	1614750
root_error	1912570
mygprecrc_special	2179180
ZX_rescale2prim	2233806
cmp_complex_appr	2238500
fujiwara_bound	2271784
checkbound	2354894
refine_H	2460420
scalepol	4289306
mygprec_absolute	4339902
_mp_mul	4374460
logmax_modulus	4450804
splitpoleval	5235841
bkeval_single_power	5236004
newton_polygon	5507192
X2XP1	5990456
_mp_sqr	6298229
dblexp	6548989
quicktofp	6979050
RgX_gtofp_bit	7031534
abs_update	8004902
mydbllogr	9546453
homothetie2n	9957624
_gen_nored	11199381
eval_rel_pol	13138005
fft	14158952
_gen_one	14473055
ZX_to_ZiX	16454994
pol_to_gaussint	17588817
_mp_add	24659790
_mp_cmul	34760102
myshiftrc	35506978
homothetie_gauss	36498183
lower_bound	40955179
findpower	40955953
graeffe	49503098
mydbllog2r	56181067
mygprec	63756695
ZiX_sqr	99034441
myshiftic	135808749
mygprecrc	215185285
mydbllog2i	226413430
dbllog2	302072587

Generated by: LCOV version 1.16